Tag: nervous system of man

Questions Related to nervous system of man

Which part of the brain control the posture and balance of the body?

  1. Cerebrum

  2. Medulla

  3. Cerebellum

  4. Pons varoli


Correct Option: C
Explanation:

a) Cerebrum serves to receive sensory inputs, to bring about integration before commanding voluntary motor responses, to coordinate the activities of another part of the brain, and to carry out higher thought processes for learning, memory, language and speech. 

b) Medulla oblongata consists of reflex centres that control heartbeat, blood vessel diameter and rhythm of breathing as well as other vital functions. 
c) Cerebellum serves to coordinate the voluntary movements of skeletal muscles as well as posture, balance and equilibrium. The vestibulocerebellum receives sensory input from vestibular apparatus and visual area and the output is sent to vestibular nuclei in the brain stem, thereby controlling posture and equilibrium. 

d) Pons serves as a connector between spinal cord and brain and between different parts of the brain, it also controls breathing.

So, the correct answer is option C.

Reflexes for maintaining vital functions like blood pressure are located in

  1. Hindbrain

  2. Midbrain

  3. Forebrain

  4. Cerebrum


Correct Option: A
Explanation:

The hindbrain includes the cerebellum, the pons and the medulla oblongata, which function collectively to support vital bodily processes. The medulla is joined to the spinal cord and controls unconscious, essential body functions such as breathing, swallowing, blood circulation and muscle tone. Located above the medulla is the pons, which receives information from visual areas to control eye and body movements and also plays a role in controlling patterns of sleep and arousal. Information is relayed from the pons to the cerebellum to control the coordination of muscular movements and maintain equilibrium.

Part of the brain concerned with the muscular movement is 

  1. Cerebellum

  2. Thalamus

  3. Hippocampus

  4. Temporal lobe of cerebrum


Correct Option: A
Explanation:

The cerebellum receives information from the sensory systems, the spinal cord, and other parts of the brain and then regulates motor movements. The cerebellum coordinates voluntary movements such as posture, balance, coordination, and speech, resulting in smooth, balanced muscular activity.

Part of mammalian brain controlling muscular coordination, equilibrium and posture is

  1. Cerebrum

  2. Corpus callosum

  3. Medulla oblongata

  4. Cerebellum


Correct Option: D

The branched tree-like structure/tree of life present in the cerebellum is

  1. Arbor vitae

  2. Arborial

  3. Archenteron

  4. Areole


Correct Option: A
Explanation:

The cerebellum is the region of the hind brain. The cortex of cerebellum is made up of grey matter which is external to the white matter. The white matter projects outside and forms a branching pattern of a tree, which is called the Arbor Vitae or the tree of life. It is required for the coordination of various movements of the body. It also allows the cerebellum to communicate with the parts of the brain. 

Hence, the correct answer is 'Arbor vitae'

Arbor vitae is

  1. Tree-like structure in cerebrum

  2. Tree of life in cerebellum

  3. End part of spinal cord

  4. Branched dendrites of a neuron


Correct Option: B

Part of brain controlling balance and coordination is

  1. Cerebrum

  2. Medulla oblongata

  3. Hypothalamus

  4. Cerebellum

  5. Corpora quadrigemina


Correct Option: D

Coordination of hand-eye or voluntary muscle activity is connected with

  1. Cerebrum

  2. Cerebellum

  3. Medulla oblongata

  4. Crura cerebri


Correct Option: B

Arbor vitae is

  1. Grooves and sulci of cerebral hemispheres

  2. Rounded elevation behind in- fundibulum

  3. Thick nerve tracts linking cerebrum with medulla oblongata

  4. Branched white matter inside cerebellum


Correct Option: D

Pons, cerebellum and medulla constitute

  1. Fore brain

  2. Mid brain

  3. Hind brain

  4. Cerebral hemispheres

  5. Telencephalon


Correct Option: C