Biol 2110 R. Socci What part of the brain receives information about planned act
ID: 3479389 • Letter: B
Question
Biol 2110 R. Socci What part of the brain receives information about planned activity, compares this with actual movements, and supplies corrective feedback signals to other parts of the brain? a. Cerebral cortex. b. Thalamus. c. Cerebellum. d. Medulla oblongata. 12. Neurotransmitters are released by neurons: a. In the cell body mitochondria. b. At the dendrites. c. At the axon terminals. d. From the cell nucleus. 13. Spinal nerves originating from this portion of the cord do not form plexuses? a. Cervical. b. Thoracic. c. Lumbar d. Sacral. 14. The ulnar nerve innervates: a. Foot. b. Forearm. c. Toes. d. Abdomen. 15.The region of the brain that helps to control equilibrium is the: a. Cerebellum. b. Thalamus. c. Hypothalamus. d. Pons. 16.Which of the following nerves arises from the lumbar plexus? a. Femoral. b. Sciatio. c. Phrenic. d. Median.Explanation / Answer
ans)
11.
a. cerebral cortex : it is important for memory, language, abstraction, emotion , attention. Hence option (a) is incorrect.
b. Thalamus: It is located just above the brain stem between cerebral cortex and the midbrain. The main function is regulate sleep, alertness, wakefulness. Hence option (b) is incorrect
c. Cerebellum : The cerebellum (which is Latin for Little brain) is a mjaor structure in hind brain. This part is responsible for balance , coordination, posture. Hence option (c) is correct
d. Medulla oblongata:
12.
a. In the cell body mitochondria : Neurotransmitter is not released in the cell body mitochondria. Hence option (a) is incorrect.
b. At dendrites : it is used for transmission of nerve impluse and not for released of neurotrasmitter. Hence option (b) is incorrect.
c. At the axon terminals : Neurotransmitter is released at the axon terminals in the form of vesicle. These vesicle fuse of pre-synaptic membrane by Calcium ion in required. Hence option (c) is correct.
d.From the cell nucleus: Neurotransmitter is not released from the cell nucleus. Hence option (d) is incorrect.
13.
a. Cervical : It is spinal nerves but no plexus. Hence option (a) is incorrect.
b. Thoracic : It is spinal nerve having plexus . Hence option (b) is correct
c.Lumbar: Hence option (c) is not correct
d.Sacral Hence option (d) is not correct
14.
a. Foot : Ulnar nerve is not originate from foot. Hence option (a) is incorrect
b. Forearm: In the anterior forearm, muscular branch of the ulnar nerve supplies two muscles. Hence option (b) is correct
c. Toes : Ulnar nerve is not originate. Hence option (c) is incorrect
d. Abdomen: It is not originate. Hence option (d) is incorrect
15.
a. Cerebellum : The cerebellum (which is Latin for Little brain) is a mjaor structure in hind brain. This part is responsible for balance , coordination, posture. Hence option (a) is correct
b. Thalamus : It is located just above the brain stem between cerebral cortex and the midbrain. The main function is regulate sleep, alertness, wakefulness. Hence option (b) is incorrect
c. Hypothalamus: It is small but important part of the brain. It contains several small nuclei with a variety functions. It play important role endocrine system. Hence option (c) is incorrect
d. Pons : It is mainly involved in arousal, atuomatic function: breathing regulation, sleep. Hence option (d) is incorrect.
16.
a. Femoral : The femoral nerve is a large nerve arising from the lumbar plexus and one of two major nerves supplying the lower limb. Hence option (a) is correct
b. Sciatic : The Sciatic nerve arise from the sacral plexus from the roots of L4-S3 and runs through the buttock and down the lower limb. It is the longest and widest single nerve in the body. Hence option (b) is incorrect.
c. Phrenic: It is mixed motor/sensory nerve that courses through the neck and thorax to innervate the diaphragm. Hence option (c) is incorrect.
d. Median : The median nerve is one of the five main nerves originating from the brachial plexus and provides motor and sensory innervation to parts forearms and hand. Hence option (d) is incorrect.
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