In the human body, the 'Cerebellum' is a large structure located at the base of the brain. Its primary functions include: MCQ with Answer and Explanation

In the human body, the 'Cerebellum' is a large structure located at the base of the brain. Its primary functions include:
A. Coordinating voluntary movements, maintaining posture, and balance
B. Processing visual and auditory information
C. Controlling emotions and memory
D. Regulating heart rate and breathing
Answer: Option A
Solution (By JKExamLibrary)
The cerebellum, meaning 'little brain', is a highly folded structure located at the posterior base of the skull, beneath the occipital lobes of the cerebrum and behind the brainstem. While it does not initiate movement, its primary functions are to coordinate voluntary motor movements, ensure muscle synergy, maintain posture, and regulate balance and equilibrium. It receives sensory input from the spinal cord, vestibular system, and cerebral cortex, and fine-tunes motor output to ensure smooth, accurate movements. Damage to the cerebellum results in ataxia (clumsy, uncoordinated movements).

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Biology Questions

Question #1
The 'Rh factor' was first discovered in the blood of which animal, giving it its name?
A. Rat
B. Reindeer
C. Rhesus monkey
D. Rabbit

Correct Answer: Option C


Explanation:
The Rh factor (Rhesus factor) is an inherited protein found on the surface of red blood cells. It was discovered in 1940 by Karl Landsteiner and Alexander Wiener. They immunized rabbits and guinea pigs with the red blood cells of the Rhesus monkey (Macaca mulatta). The serum produced contained antibodies that agglutinated the red blood cells of about 85% of humans. These individuals were designated Rh-positive, and the rest Rh-negative.

This question belongs to: Science Biology
Question #2
The type of root system where many roots arise from the base of the stem, as in grasses, is called:
A. Fibrous root system
B. Prop root system
C. Adventitious root system
D. Taproot system

Correct Answer: Option A


Explanation:
Fibrous root systems consist of a dense network of thin, branching roots originating from the stem base, typical of monocots like grasses. Taproot system has a main central root (dicots). Adventitious roots arise from stems or leaves, prop roots are supportive. Fibrous roots are effective in preventing soil erosion.

This question belongs to: Science Biology
Question #3
The organ that is responsible for the detoxification of ammonia to urea in humans is the:
A. Spleen
B. Pancreas
C. Kidney
D. Liver

Correct Answer: Option D


Explanation:
The liver converts toxic ammonia (from amino acid deamination) into less toxic urea via the urea cycle (ornithine cycle) in hepatocytes. Urea is then excreted by the kidneys. The kidneys filter urea but do not produce it. Pancreas produces enzymes/hormones, spleen filters blood.

This question belongs to: Science Biology