1. Enumerate the functions of hypothalamus.
. Write main functions of cerebrospinal fluid.
4. Give a brief account of CTZ (chemoceptor trigerzon
6. What is a ganglion? Give its role in nervous system.
7. What is synaptic cleft? State its function.
8. Classify nervous system.
9. Name the ventricles present in the brain. d
10. What is extra pyramidal tract.
11. Write the functions of olfactory and optic nerve.
Answers
Answer:
1.One of the most important functions of the hypothalamus is to link the nervous system to the endocrine system via the pituitary gland. ... The hypothalamus controls body temperature, hunger, important aspects of parenting and attachment behaviours, thirst, fatigue, sleep, and circadian rhythms.
2.Cerebrospinal fluid has three main functions:
- it protects brain and spinal cord from trauma
- it supplies nutrients to nervous system tissue.
- it removes waste products from cerebral metabolism.
3.The chemoreceptor trigger zone (CTZ) is an area of the medulla oblongata that receives inputs from blood-borne drugs or hormones, and communicates with other structures in the vomiting center to initiate vomiting.
4.Ganglion is a structure containing a number of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fibre.
Ganglia provide relay points and intermediary connections between different neurological structures in the body, such as the peripheral and central nervous systems
5.The synaptic cleft, by definition, is a tiny opening between neurons. ... When the electrical signal reaches the presynaptic ending, it is translated into a chemical message that then diffuses across the synaptic cleft to the postsynaptic cell.The synaptic cleft is mainly used to transport neurotransmitters from one synapse to another in order to continue carrying the nerve impulse until it reaches its destination.
6.the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body.
7.The ventricular system is composed of 2 lateral ventricles, the third ventricle, the cerebral aqueduct, and the fourth ventricle
8.the extrapyramidal system is a part of the motor system network causing involuntary actions. The system is called extrapyramidal to distinguish it from the tracts of the motor cortex that reach their targets by traveling through the pyramids of the medulla.
9.olfactory nerve- the olfactory nerve is the first of 12 cranial nerves located within the head. It relays sensory data to the brain, and it is responsible for the sense of smell.
optic nerve-The job of the optic nerve is to transfer visual information from the retina to the vision centers of the brain via electrical impulses.