Human Physiology – Neural Control and Coordination Quiz - ICSE Class 11 Biology
Free practice quiz: Human Physiology – Neural Control and Coordination (ICSE Class 11 Biology). 51 multiple-choice questions with answers and explanations. Play online, no sign-up needed.
Play all 51 questions freeSample questions
Which part of the neuron is primarily responsible for transmitting the nerve impulse away from the cell body?
- Dendrites
- Axon
- Cell body (Soma)
- Myelin sheath
Show answer
Answer: B. Axon
The axon is a long projection of a neuron that typically conducts electrical impulses known as action potentials away from the nerve cell body.
Which division of the human nervous system is responsible for controlling voluntary movements?
- Autonomic Nervous System
- Sympathetic Nervous System
- Parasympathetic Nervous System
- Somatic Nervous System
Show answer
Answer: D. Somatic Nervous System
The somatic nervous system is responsible for relaying sensory information and controlling voluntary motor functions, including skeletal muscle movement.
The release of which hormone from the adrenal medulla is a key component of the 'fight or flight' response?
- Insulin
- Glucagon
- Adrenaline (Epinephrine) and Noradrenaline (Norepinephrine)
- Cortisol
Show answer
Answer: C. Adrenaline (Epinephrine) and Noradrenaline (Norepinephrine)
During sympathetic nervous system activation, the adrenal medulla releases adrenaline and noradrenaline into the bloodstream, which mediate many of the physiological effects of the 'fight or flight' response.
Which of the following is an example of a reflex action that bypasses conscious processing in the cerebrum?
- Reading a book
- Tying shoelaces
- Withdrawing your hand from a hot stove
- Solving a mathematical problem
Show answer
Answer: C. Withdrawing your hand from a hot stove
The withdrawal reflex from a painful stimulus is a protective mechanism mediated by the spinal cord, allowing for a rapid response without immediate involvement of the higher brain centers.
The process of signal transduction at a chemical synapse involves:
- Direct ion flow through gap junctions
- Binding of neurotransmitters to postsynaptic receptors
- Electrical stimulation of the postsynaptic membrane
- Release of neurotransmitters from the postsynaptic neuron
Show answer
Answer: B. Binding of neurotransmitters to postsynaptic receptors
In chemical synapses, the signal is transmitted when neurotransmitters released from the presynaptic neuron bind to specific receptors on the postsynaptic membrane, initiating a response.