biology : class11 Somatic Nervous System : CNS, PNS, Visceral Nervous System : Human Nervous System MCQ Questions and Answers
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Somatic Nervous System
MCQ questions and answers.
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MCQ Questions
1. Which type of muscles is primarily controlled by the somatic nervous system?
A.
Cardiac muscles
B.
Smooth muscles
C.
Skeletal muscles
D.
Glandular muscles
Correct Answer:
Skeletal muscles
Explanation:
The somatic nervous system controls skeletal muscles, which are generally responsible for voluntary movements of the body.
2. The somatic nervous system is mainly associated with which type of control?
A.
Voluntary control
B.
Hormonal control
C.
Digestive control
D.
Heartbeat control
Correct Answer:
Voluntary control
Explanation:
The somatic nervous system enables conscious control of skeletal muscle movements, such as walking or lifting an object.
3. Which structure receives sensory information carried by the somatic nervous system?
A.
Skeletal muscles and skin
B.
Only the heart
C.
Only the stomach
D.
Only endocrine glands
Correct Answer:
Skeletal muscles and skin
Explanation:
The somatic nervous system carries sensory information from the skin, skeletal muscles, joints, and related body structures to the central nervous system.
4. Which type of nerve pathway carries commands from the central nervous system to skeletal muscles?
A.
Somatic motor pathway
B.
Visceral sensory pathway
C.
Endocrine pathway
D.
Cardiac pathway
Correct Answer:
Somatic motor pathway
Explanation:
The somatic motor pathway carries commands from the brain or spinal cord to skeletal muscles.
5. A person consciously moving an arm is using which nervous system division?
A.
Somatic nervous system
B.
Visceral nervous system
C.
Endocrine system
D.
Digestive system
Correct Answer:
Somatic nervous system
Explanation:
Conscious movement of an arm involves voluntary control of skeletal muscles by the somatic nervous system.
6. Which of the following is a function of the somatic nervous system?
A.
Controlling skeletal muscle movement
B.
Regulating heartbeat automatically
C.
Controlling intestinal contractions
D.
Stimulating hormone release from glands
Correct Answer:
Controlling skeletal muscle movement
Explanation:
The main motor function of the somatic nervous system is to control skeletal muscles.
7. Sensory receptors in the skin send information to the central nervous system through which division?
A.
Somatic sensory division
B.
Visceral motor division
C.
Endocrine division
D.
Cardiac division
Correct Answer:
Somatic sensory division
Explanation:
The somatic sensory division carries information such as touch, pressure, and temperature from the skin to the central nervous system.
8. Which action is most directly controlled by the somatic nervous system?
A.
Moving the leg to kick a ball
B.
Increasing the heartbeat
C.
Moving food through the intestine
D.
Changing the diameter of a blood vessel
Correct Answer:
Moving the leg to kick a ball
Explanation:
Kicking a ball requires voluntary movement of skeletal muscles, which is controlled by the somatic nervous system.
9. The somatic nervous system forms a functional part of which larger system?
A.
Peripheral nervous system
B.
Endocrine system
C.
Digestive system
D.
Respiratory system
Correct Answer:
Peripheral nervous system
Explanation:
The somatic nervous system is a division of the peripheral nervous system that connects the central nervous system with skeletal muscles and sensory receptors.
10. Which response involves the somatic nervous system?
A.
Pulling the hand away from a hot object
B.
Slowing the heartbeat during rest
C.
Increasing stomach movement after eating
D.
Reducing the diameter of the pupil
Correct Answer:
Pulling the hand away from a hot object
Explanation:
Pulling the hand away uses skeletal muscles and is a somatic motor response, even though the withdrawal reflex can occur without conscious decision.
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