BIOL 252 / BIOD 152 Anatomy and
Physiology II Review of Modules 1-7
Complete 200 Questions and Correct
Verified Answers Already Graded A+
MODULE 1: NERVOUS SYSTEM (Questions 1–20)
1. What are the two major divisions of the nervous system?
Answer: Central Nervous System (CNS) and Peripheral Nervous System
(PNS)
2. What are the three main parts of a neuron?
Answer: Cell body (soma), dendrites, and axon
3. Which part of the neuron conducts impulses AWAY from the cell
body?
Answer: Axon
4. True or False: The PNS is composed of the brain and spinal cord.
Answer: False (The CNS is composed of the brain and spinal cord; the PNS
is composed of cranial and spinal nerves)
,5. What type of neuron has one axon and one dendrite?
Answer: Bipolar neuron
6. What type of neuron has many dendrites and a single axon?
Answer: Multipolar neuron
7. What type of neuron has a single process that splits into two
branches?
Answer: Unipolar (pseudounipolar) neuron
8. What is the gap between two neurons called?
Answer: Synaptic cleft
9. What is the resting membrane potential of a neuron?
Answer: Approximately -70 mV
10. During depolarization, which ion rushes into the neuron?
Answer: Sodium (Na⁺)
,11. What is the membrane potential during the peak of
depolarization?
Answer: Approximately +40 mV
12. During repolarization, which ion exits the neuron?
Answer: Potassium (K⁺)
13. What is the function of the myelin sheath?
Answer: To insulate the axon and increase the speed of impulse
conduction
14. Which cells produce myelin in the CNS?
Answer: Oligodendrocytes
15. Which cells produce myelin in the PNS?
Answer: Schwann cells
16. What triggers the release of neurotransmitters from the axon
terminal?
Answer: Calcium (Ca²⁺) influx
, 17. Neurotransmitters are stored in what structures within the axon
terminal?
Answer: Synaptic vesicles
18. True or False: Neurons in the CNS can regenerate easily after
injury.
Answer: False (CNS neurons generally do not regenerate)
19. The somatic nervous system controls what type of muscle?
Answer: Skeletal muscle (voluntary control)
20. The autonomic nervous system is divided into which two branches?
Answer: Sympathetic and parasympathetic nervous systems
MODULE 6: ENDOCRINE SYSTEM (Questions 21–35)
21. What is a hormone?
Answer: A chemical messenger secreted into the blood that acts on target
cells with specific receptors
22. Steroid hormones are derived from which molecule?
Answer: Cholesterol
Physiology II Review of Modules 1-7
Complete 200 Questions and Correct
Verified Answers Already Graded A+
MODULE 1: NERVOUS SYSTEM (Questions 1–20)
1. What are the two major divisions of the nervous system?
Answer: Central Nervous System (CNS) and Peripheral Nervous System
(PNS)
2. What are the three main parts of a neuron?
Answer: Cell body (soma), dendrites, and axon
3. Which part of the neuron conducts impulses AWAY from the cell
body?
Answer: Axon
4. True or False: The PNS is composed of the brain and spinal cord.
Answer: False (The CNS is composed of the brain and spinal cord; the PNS
is composed of cranial and spinal nerves)
,5. What type of neuron has one axon and one dendrite?
Answer: Bipolar neuron
6. What type of neuron has many dendrites and a single axon?
Answer: Multipolar neuron
7. What type of neuron has a single process that splits into two
branches?
Answer: Unipolar (pseudounipolar) neuron
8. What is the gap between two neurons called?
Answer: Synaptic cleft
9. What is the resting membrane potential of a neuron?
Answer: Approximately -70 mV
10. During depolarization, which ion rushes into the neuron?
Answer: Sodium (Na⁺)
,11. What is the membrane potential during the peak of
depolarization?
Answer: Approximately +40 mV
12. During repolarization, which ion exits the neuron?
Answer: Potassium (K⁺)
13. What is the function of the myelin sheath?
Answer: To insulate the axon and increase the speed of impulse
conduction
14. Which cells produce myelin in the CNS?
Answer: Oligodendrocytes
15. Which cells produce myelin in the PNS?
Answer: Schwann cells
16. What triggers the release of neurotransmitters from the axon
terminal?
Answer: Calcium (Ca²⁺) influx
, 17. Neurotransmitters are stored in what structures within the axon
terminal?
Answer: Synaptic vesicles
18. True or False: Neurons in the CNS can regenerate easily after
injury.
Answer: False (CNS neurons generally do not regenerate)
19. The somatic nervous system controls what type of muscle?
Answer: Skeletal muscle (voluntary control)
20. The autonomic nervous system is divided into which two branches?
Answer: Sympathetic and parasympathetic nervous systems
MODULE 6: ENDOCRINE SYSTEM (Questions 21–35)
21. What is a hormone?
Answer: A chemical messenger secreted into the blood that acts on target
cells with specific receptors
22. Steroid hormones are derived from which molecule?
Answer: Cholesterol
