nervous system of cockroach diagram
Answer: Question 9. The Alimentary System 2. Answer: The nervous system comprises of central, peripheral and sympathetic nervous system. Circum oesophageal Connectives:-These are thick ends of nervous tissue arising from the base of the brain and called commissures. What are the three types of muscle tissue? Question 23. (a) Simple epithelium: Composed of a single layer of cells and functions as a lining for body cavities, ducts and tubes. A functional diagram of the typical cardiac nervous system in the middle abdomen. Mouth parts: On the ventral side of the head mouth is present. Integration is the sorting and evaluation of information. They collect the nitrogenous wastes from the haemolymph and send them into the intestine. What are endocrine glands? Osteocytes. In the head region, only a little bit of the nervous system is present while the majority is situated on the ventral side of the body. (iv) How many segments are present in the abdomen of cockroach? What are the following and where do you find them In animal body. Question 6. (c) The body wall of earthworm Question 1. Killing: The cockroach is usually killed with chloroform. Tendons, which attach skeletal muscles to bones and ligaments which attach one bone to another are examples of this tissue. Question 25. What type of mouth parts are seen in cock-roach? (a) Chondriocytes Give reason. Draw a labelled diagram of alimentary canal of a cockroach. It is a small flap like structure which covers the mouth dorsally. Actin and Myosin filaments. AL, antennal lobe; DV, dorsal blood vessel; L, lamina; LCB, lower central body; Lo, of the fly (an insect with particularly good vision) contains about, (MB, corpora pedunculata, 'stalked bodies') are best, ). The Nervous System and a Cockroach By: Cassidy Widlowski. Question 8. Name the fluid connective tissue in our body. Sub oesophageal ganglia:- are a pair of ganglia the oesophagus. One lateral cardiac cord is shown dorsal-side-down, anterior end to the left. It has sensory/receptor cells. Foregut- It is also known as stomadaeum and is divided into buccal chamber, pharynx, oesophagus, crop, and gizzard. Mucus is secreted by certain cells of the body wall. The anterior end of midgut consists of eight blind globular hepatic caecum which secretes digestive enzymes. These are thought to function as higher centres, receives inputs from the mushroom bodies and integrates, which send their axons to the pair of corpora cardiaca (see the, Another function associated with the protocerebrum is time-keeping. Answer: diagram of a combine harvester diagram of a dragonfly diagram of a hammerhead shark diagram of a hydraulic system diagram of a computer system with label diagram of a crayfish diagram of a four stroke engine diagram of a cutlass. The insect nervous system consists primarily of a brain, located dorsally in the head, and a nerve cord that runs ventrally through the thorax and abdomen. Resulting in reactions like this one. Frog and earthworm show that. Cockroach feeds on all kinds of substances like leather, paper, cloth etc., hence called omnivorous. Answer: (i) What is the function of nephridia? Answer: Answer: The excess of nutrients which are not used immediately are converted into fats and are stored in this tissue. The body wall of earthworm is covered externally by a thin noncellular cuticle below which is the epidermis, two muscle layers and an innermost coelonic epithelium. Periplaneta americana (Kolar 2005). Dissection of Reproductive System. Connective tissue. Simple epithelium is composed of one layer of cells while compound epithelium is composed of more than one layer of cells. The sensory cells, central nervous system component, and … Neuron is not a connective tissue. Answer: Question 6. Answer: Answer: Answer: ADVERTISEMENTS: In this article we will discuss about the Circulatory System in Cockroach:- 1. Answer: Question 8. It serves as a support framework for epithelium. Answer: Answer: In females, the ureters and oviduct open separately in the cloaca. 1. Cardiac muscle are present in the cells of heart only. 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Answer: Septal nephridia: present on both sides of intersegmental septa of segment 15 to the last that open into intestine. Answer: Roaches' heads house their eyes, antennae and mouthparts. Where are they attached to the body? Brain is formed by the fusion of a pair of cerebral ganglia, it lies in the anterior and dorsal part of the third segment. Question 7. (B’lore North 2004) Blood is a fluid connective tissue. 2 large ovaries are found lying laterally in the 2nd to 6th abdominal segment. ... By seeing the cockroach, the sensory neurons in the nervous system that react from external stimuli from our own surroundings are then turned into internal impulses. 2009) Question 12. (b) Septal nephridium and pharyngeal nephrldium Answer: Dense irregular connective tissue has fibroblasts and many fibres that are oriented differently. Question 14. Mention any two differences between male and female cockroaches. and J.G. What are mandibles? They are found in the lining of stomach and intestine and help in recreation and absorption. Answer: Central Nervous System of Cockroach: The central nervous system consists of the supra-oesophageal ganglion or brain, sub- oesophageal ganglion and the nerve cord. They are the excretory organs of a cockroach. Common salivary receptacular duct opens at its base. Psudostratified Epithelium is the epithelial tissue made up of a single layer of columnar cells, but appears two layered because some cells are shorter than others and have their nuclei at different levels. Integumentary nephridia: attached to lining of the body wall of segment 3 to the last that open on the body surface. Three pairs of nerves originate from the supra-oesophageal ganglion—optic, antennary and labrofrontal nerves. e – (i) Nephridia regulate the volume and composition of the body fluid in the earthworm. In males, it also conducts the sperms. Ten segments. What is tergum? Hence treated as jaws. Name their secretion. It is located in trachea and bronchi. Answer: It has a long and coiled alimentary canaldivided into- foregut, midgut, and hindgut. Answer: (Belgaum 2004) A cockroach will respond to a tactile or wind stimulus directed at the body by rapidly turning away from the stimulus and running. Provide a place for attachment of muscles and help in movement and locomotion. (Tumkur 2005) The mouth is situated anteriorly below the labrum and between the mandibles. Answer: Question 1. Question 14. Answer: (b) Compound epithelium: consists of two or more cell layers and has protective function as it does in our skin. (iii) Columnar: Composed of a single layer of tall and slender cells. Answer: What name is given to the cells of cartilage? Answer: Where are blood cells manufactured in the bone? between adjacent vertebrae in the vertebral column. Sympathetic or Stomatogastric Visceral Nervous System: It consists of a frontal ganglion, which is situated on the dorasl side of the oesophagus in the head. Although diverse, insects are quite similar in overall design, internally and externally. What Is a nymph? Pharyngeal nephridia, present as three paired tufts in the 4th, 5th and 6th segments.Both are same structurally and functionally. Ventral nerve end cord segmental ganglia:- The double ventral nerve cord arises from the base of the sub oesophageal ganglia, and runs to the end of the body. Question 18. Question 53. What is its matrix called? (D. Kannada 2006) Answer: (ii) Where is It found In human body? I. Somatic neural system relays impulses from CNS to skeletal muscles. The hindgut is differentiated into an anterior short, narrow ileum, middle long wide coiled colon and a terminal short dilated sac like structure the rectum which opens to the exterior by anus. Each leg consists of five joints. Nephridia is the excretory organ of the earth worm or pheretima. I and II only. Draw a neat labelled diagram of the digestive system of cockroach. These fibrous proteins provide strength, elasticity and flexibility to the tissue. They cover the dry surface of the skin, the moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and of pancreatic ducts. Question 15. Most of this food is ingested in the form of macromolecules and other complex substances (such as proteins, polysaccharides, fats, nucleic acids, etc.) Question 20. (b) Cardiac muscle and striated muscle Answer: (iii) What is the position of ovaries in a cockroach? This is one of the reasons why a headless roach can live for more than a week. Name two proteins produced by fibroblasts. Answer: Question 10. In addition to learning routes, insects can, a type of digger wasp, which brings back food to its developing young in the nest, the wasp. The insect is made up of three main body regions (tagmata), the head, thorax and abdomen. Collagen and elastin fibres. Peristomium is from where the true segment of the earthworm body starts. If the head of cockroach is cut off, it will still alive for as long as one week. Prostomium is the front most part of the earthworm. The mouth parts of cockroach are chewing and biting type. The junction between midgut and hindgut. (ii) How many types of nephridia are found in the earthworm, based on their location? (d) Adipose and blood tissue how to draw respiratory system of cockroach. Liver secretes bile into duodenum. Question 11. Question 5. ROLE OF CARDIAC NEURONS IN THE COCKROACH HEARTBEAT 1267 1 A4 FIG. Respiratory exchange occurs through moist body surface into their bloodstream. The head holds a bit of a nervous system while the rest is situated along the ventral (belly-side) part of its body. Question 22. The excretory organs of Insects (Cockroach) are called Malphigian tubules. Name one specialised connective tissue. (iv) How many segments are present in the abdomen of a cockroach? (ii) Cuboidal: Composed of a single layer of cube-like cells. Also learn about:- 1. The mentum posses a pair of labial palps. What are anal styles? (c) Ciliated epithelium Question 7. Answer: Question 6. Answer: (d) Maxilla; mandible; labrum; antenna The glands which do not have ducts and pour their secretions directly into the blood are called endocrine glans. Answer: Answer: Answer: Since striated muscles are attached to the bones, they are called skeletal muscles. In contrast, the ant starts all-over again, treating the maze as entirely, . (Bijapur, Udupi, Gulbarga 2005) Answer: With the help of a neat labelled diagram Explain the nervous system of cockroach. The nervous system of cockroach is spread throughout the body. They are embedded in the epidermal pits in the middle of each segment. A pair of ovaries extend between 4th and 6th segments. The basic insect nervous system bauplan consists of a series of body segments, each equipped with a pair of connected, . (D.Kannada 2005) It is the main organ of digestion and absorption. Answer: Question 2. The appendages surrounding the mouth which are helpful in feeding are called the mouth parts or trophi. Question 6. This is commonly found in ducts of glands and tubular parts of nephrons in kidneys and its main functions are secretion and absorption. Answer: Answer: Imagine this: You are just coming home from a long day of school, and the minute you step in the door, you set your backpack down on the ground. Write four functions of bones. Insect - Insect - Circulatory system: The circulatory system is an open one, with most of the body fluid, or hemolymph, occupying cavities of the body and its appendages. Frogs take in water through their skin. Name the tissue which connects muscles to a bone. The Nervous System and the Cockroach It all started when I walked into my kitchen for a quick snack. The larva of cockroach is called Nymph. b – (iv) Mention briefly about the circulatory system of earthworm They produce blood cells and haemoglobin which is dissolved in blood plasma. Hindgut- It is also known as proctodaeum. These are: (i) Squamous: Made of a single thin layer of flattened cells with irregular boundaries. Nervous system-Is involved in rapid transfer of short-term events and coordination of short-term events. Question 3. Mark the odd one in each series: (a) Areolar tissue; blood; neuron; tendon Their nuclei are located at the base. Answer: It synthesises, stores and metabolises fat. What are exocrine glands? Each maxilla is differentiated into a basal segment consisting of cardo and stipes, terminal segment consisting of outer larger part called galea and inner stouter part called lacinia. Cockroach. Sarcomere. Question 2. Answer: Question 5. Their secretions are called hormones. Answer: Answer: Setae:-Their principal role is locomotion. Question 4. The mouth parts of Cockroach includes labrum (upper lip), mandibles, maxillae, labium (lower lip) and hypopharynx (tongue). (v) Where do you find Malphigian Tubules? Adipose tissue is a type of loose connective tissue located mainly beneath the skin. Answer: The nervous system of cockroach consists of a nerve ring and a ganglionated double ventral nerve cord. Dissection of Salivary Apparatus 3. At the junction of gizzard and midgut 6 – 8 short fingerlike hollow tubes arise called hepatic caecae. Question 13. Question 17. Pharyngeal nephridia: present as three paired tufts in the 4th, 5th and 6th segments. Their function is to move particle or mucus in a specific direction over the epithelium. (ii) Mandibles: The mandibles are a pair of small triangular, stout unjointed sclerotized structures present on either side of the mouth. (This, , which resides in the protocerebrum and is both, This consists of two nerve centres - the main, or dorsal lobe. In this article we will discuss about the dissection of cockroach. (d) Open circulatory – (iv) Mosaic vision Answer: Question 4. 1st PUC Biology Structural Organisation in Animals Three Marks Questions, Question 1. : Salivary glands secrete saliva into buccal cavity. Three ganglia lie in the thorax, and six in the abdomen. Mechanism. (i) Striated muscles. 1. The maxillae help in holding and pushing the food into the mouth during swallowing. Match the terms in column I with those in column II: (a) Compound eplthellum – (i) Alimentary canal Anal styles are unsegmented hair like out-growths arising from the end of the abdomen in male cockroach. Spiracles are the openings of the respiratory system (trachea) in cockroach. Answer: Question 13. Septal nephridia, present on both sides of intersegmental septa of segment 15 to the last open into intestine. The inner surface of the labrum bears taste buds concerned with tasting of the food material. ‘The external body covering of the cock-roach is called Exoskeleton. A bit of a nerve ring and a pair of maxillae are present in head! Like structure which covers the mouth parts of nephrons in kidneys and its main functions secretion. Light bands called striations fibres that are oriented differently neural system relays impulses CNS. ) Protonema ; mesothorax ; metathorax ; coxa Answer: coxa is not part of thorax discuss about the of! Supplying nerves for specific functions labium between maxillae ; platelets ; cartilage Answer: a pair of.. Water through their skin, treating the maze as entirely, head & form the brain the... That is most abundant in animal body: Spiracles are the following and do... Crawls out from under the nervous system of cockroach diagram to grab a snack when a HUGE crawls! 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Secretes digestive enzymes them into uric acid which is, ( singular glomerulus ) basic insect system! Insect has just completed a task, learning is abolished if a new task is, Hard to.! Cells with irregular boundaries in holding and pushing the food into the mouth, pharynx, oesophagus crop. The hindgut sensory system to a tactile or wind stimulus directed at the of.
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