Tag: zoology

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Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

The part of human brain that is responsible for hand-eye coordination is

  1. cerebellum

  2. pons varolii

  3. medulla oblongata

  4. thalamus.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cerebellum is the part of the brain responsible for coordinating voluntary movements, including hand-eye coordination. It receives input from sensory systems and adjusts motor output accordingly.

Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

Which of the following statements is correct regarding cerebellum?

  1. It is a part of hindbrain

  2. It consists of two cerebellar hemisphere and a vermis

  3. Arbor vitae is present in cerebellum

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cerebellar hemispheres are the largest regions of the cerebellum. The cerebellar hemispheres are two divisions of the cerebellum on either side of the vermis. They are functionally subdivided into lateral and medial portions. It is a part of the hindbrain. The arbor vitae is the cerebellar white matter, so called for its branched, tree-like appearance. In resembles like a fern and is present in both cerebellar hemispheres. It brings sensory and motor information to and from the cerebellum.

Thus, the correct option is 'All of these.'

Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

........................... coordinates the activity of picking up pencil for writing.

  1. Cerebellum

  2. Cerebrum

  3. Medulla oblongata

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Coordination between various muscles needed for picking up the pencil, orienting it correctly etc are controlled by the cerebellum of the brain, a part of the hind brain.

Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

Cerebellum of brain is concerned with

  1. controlling rapid muscular activities

  2. learning in early stages

  3. maintaining posture, orientation and equilibrium of body

  4. all of these.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The cerebellum is a vital part of the brain and is primarily responsible for motor control. This includes muscle tone, equilibrium, and balance as it relates to movement. Additionally, it seems the cerebellum may actually have additional functions, including some cognitive and emotional functionals. 
So, the correct answers are 'All of these'.
Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

Spinal cord originates from cerebellum.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The spinal cord is a long bundle of nervous tissue that originates from the medulla oblongata to the lumbar region of the vertebral column. It connects brain to peripheral nerves in the body. It acts as means of communication. 

Thus, the correct answer is option B.

Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

What would happen to the person if cerebellum of his brain is damaged?

  1. He will lose his memory power

  2. He will not be able to swallow food properly

  3. He will be unable to coordinate and stand properly

  4. He will lose his power of vision and hearing
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The cerebellum is located down to the occipital lobe of the cerebrum. The cerebellum is the vital part of the brain that controls the motor movements of the body. Its functions include coordinated movement, balance, posture, speech, etc. Thus in this case, if the cerebellum is damaged the person won't be able to stand or walk properly. So, the correct answer is option C.

Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

If a person cannot walk in a straight line or cannot balance a ride on bicycle, probably which part of his brain is not working

  1. Cerebrum

  2. Cranium

  3. Cerebellum

  4. Hypothalamus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The cerebellum is located down to the occipital lobe of the cerebrum. The cerebellum is the vital part of the brain that controls the motor movements of the body. Its functions include coordinated movement, balance, posture, speech, etc. Thus in this case of imbalance in riding a bicycle, or not walking is straight line can be caused by dizziness and improper functioning of the cerebellum. So, the correct answer is option C.

Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

If cerebellum of man gets damaged, his movement becomes

  1. Shaky and speech becomes defective

  2. Unbalanced walk, uncontrolled and defective speech, intention tremor

  3. Jerky and defective speech

  4. Jerky and walked uncontrolled
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The cerebellum is located down to the occipital lobe of the cerebrum. The cerebellum is the vital part of the brain that controls the motor movements of the body. Its functions include coordinated movement, balance, posture, speech, etc. Thus his movement and speech becomes unbalanced and uncontrolled. Thus, the correct answer is option B.

Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

Which of the following nerve helps in maintaining the equilibrium of body?

  1. Trochlear

  2. Abducens

  3. Auditory

  4. Facial
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Depending on the plane of movement, the endolymph flowing within the semicircular canals stimulates the appropriate movement hair cells. 

The static head position is sensed by the vestibule, specifically, its utricle and saccule, which contain the hair cells. 
Different head positions produce different gravity effects on these hair cells. The hair cells for both position and movement create nerve impulses. These impulses travel over the vestibulocochlear nerve (auditory nerve) to synapse in the brain stem, cerebellum, and spinal cord. 

Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

If a person cannot walk in a straight line or cannot balance a ride on bicycle, probably which part of his brain is not working properly? 

  1. Cerebrum

  2. Cranium

  3. Cerebellum

  4. Hypothalamus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The cerebellum is a part of the brain. It controls the motor control. It receives information from the sensory systems, spinal cord and other parts of the brain and regulates the motor movements. It coordinates voluntary movements such as posture, balance, coordination and speech. So. if a person cannot walk in a straight line or cannot balance a ride on a bicycle, it means cerebellum is not working properly.