TEAS 7 NERVOUS SYSTEM
EXAM QUESTIONS AND
CORRECT ANSWERS
2026/2027 GRADED A+ .
,1. What are the 2 main parts of the nervous system✓✓ CORRECT ANSWER Central nervous system Peripheral
nervous system
2. What consists of the central nervous system✓✓ CORRECT ANSWER brain and spinal cord
3. What consists of the peripheral nervous system✓✓ CORRECT ANSWER nervous tissues (nerves, ganglia) that are outside the
CNS
4. What does the central nervous system do✓✓ CORRECT ANSWER integrates sensory information
5. What does the peripheral nervous system do✓✓ CORRECT ANSWER sends information to and from the CNS allowing it to
communicate with the rest of the body
6. What do afferent neurons of the PNS do✓✓ CORRECT ANSWER Atterent neurons of the PNS transmit impulses to the CNS
7. What do efferent neurons do✓✓ CORRECT ANSWER Etterent neurons transmit impulses to ettectors
8. What are the 2 parts of the PNS✓✓ CORRECT ANSWER Autonomic system (ANS)
Somatic nervous system (SNS)
9. What part of the nervous system controls voluntary movement? ex: contraction of skeletal muscle:
Somatic nervous system (SNS)
10. What part of the nervous system controls involuntary movement?
Ex: contraction of smooth/ cardiac muscles/ glandular secretions: Autonomic ner-vous system (ANS)
11. What are the 2 parts of the Autonomic nervous system (ANS)✓✓ CORRECT ANSWER Parasympathetic division
Sympathetic division
12. Activates the "fight and flight" response preparing the body for action by increasing heart rate, dilating
pupils, bronchial tubes, and suppressing functions that are not required for immediate survival: Sympathetic
division
13. What does the sympathetic division do✓✓ CORRECT ANSWER fight or flight
increasing heart rate, dilating pupils, bronchial tubes, and suppressing functions that are not required for immediate survival
14. "Rest and digest"
functions by decreasing heart rate, constricting pupils, bronchial tubes, and promoting digestion: Parasympathetic
division
15. What does the parasympathetic division do✓✓ CORRECT ANSWER "Rest and digest" functions
by decreasing heart rate, constricting pupils, bronchial tubes, and promoting digestion
16. What are the 2 neuron pathways of the autonomic nervous system (sym-pathetic + parasympathetic):
Preganglionic neuron
,Postganglionic neuron
17. what does the preganglionic neuron do✓✓ CORRECT ANSWER runs from the CNS to a ganglion
18. what does the postganglionic neuron do✓✓ CORRECT ANSWER innervates the ettector
19. What do the preganglionic neurons of the sympathetic nervous system release✓✓ CORRECT ANSWER
acetylcholine (ACh)
which is the stimulus for the release of norepinephrine from postganglionic neurons
20. What do the postganglionic neurons of the sympathetic nervous system release✓✓ CORRECT ANSWER
norepinephrine
21. What does norepinephrine do✓✓ CORRECT ANSWER helps control alertness and arousal Acts
on target tissues promoting a rapid and unified response
- heart rate increases
- respiration rate increases
- blood flow to the heart and skeletal muscle increases
- Pupils dilate
- Glycogen is broken down
22. What do both the preganglionic and postganglionic neurons of the parasympathetic nervous system
release✓✓ CORRECT ANSWER acetylcholine
23. The nervous system stimulates events that are slower-paced and less essential for
immediate survival: parasympathetic
24. What does the parasympathetic nervous system do to the body along with the release of acetylcholine✓✓
CORRECT ANSWER - Heart rate decreases
- Respiration rate decreases
- Blood flow is directed to digestive organs
- Peristalsis is promoted
- Pupils constrict
- Glycogen is synthesized
25. What are sensory neurons✓✓ CORRECT ANSWER atterent neurons that deliver impulses to the CNS
, 26. Mechanoreceptors: response to changes in pressure or tension
respond to touch, pressure, vibration, stretch, and itch
27. What are cutaneous touch receptors that are examples of mechanorecep-tors✓✓ CORRECT ANSWER - Meissner's
corpuscles
- Merkel's disks
- Pacinian corpuscles
- Ruflni endings
- Muscle spindles that detect stretching of skeletal muscle
- Receptors of the inner ear that detect vibrations
28. What are chemoreceptors✓✓ CORRECT ANSWER Olfactory receptors and taste receptors that detect the presence of chemicals
29. What are photoreceptors✓✓ CORRECT ANSWER The rod and cone cells of the eye that responds to light
30. What are thermoreceptors✓✓ CORRECT ANSWER Sense both absolute temperature and changes in temperature
31. What are nociceptors✓✓ CORRECT ANSWER Detect pain
32. What are exteroceptors✓✓ CORRECT ANSWER Sensory neurons near the body surface that transmit information about the external environment
33. What are proprioceptors✓✓ CORRECT ANSWER Senosory neurons within the inner ear, skeletal muscles, and joints that provide information about
movement, position, and equilibrium
34. What are interoceptors✓✓ CORRECT ANSWER Sensory neurons of visceral organs and blood vessels that provide infor-mation about internal
stimuli
35. Once sensory information has been processed, what neurons transmit the impulse away from the CNS to activate
muscles and glands✓✓ CORRECT ANSWER Ettector neurons
36. Where do effector neurons transmit impulses in the CNS and what do they activate✓✓ CORRECT ANSWER ettector
neurons transmit the impulse away from the CNS to activate muscles and glands
37. Where do all motor neurons of the somatic division run✓✓ CORRECT ANSWER run directly from the CNS to the ettector
without synapsing without another neuron
38. How many neuron pathways does the autonomic division use✓✓ CORRECT ANSWER two-neuron pathways
39. What is the main function of the nervous system✓✓ CORRECT ANSWER It is responsible for coordinating and controlling all of
the activities of the body
EXAM QUESTIONS AND
CORRECT ANSWERS
2026/2027 GRADED A+ .
,1. What are the 2 main parts of the nervous system✓✓ CORRECT ANSWER Central nervous system Peripheral
nervous system
2. What consists of the central nervous system✓✓ CORRECT ANSWER brain and spinal cord
3. What consists of the peripheral nervous system✓✓ CORRECT ANSWER nervous tissues (nerves, ganglia) that are outside the
CNS
4. What does the central nervous system do✓✓ CORRECT ANSWER integrates sensory information
5. What does the peripheral nervous system do✓✓ CORRECT ANSWER sends information to and from the CNS allowing it to
communicate with the rest of the body
6. What do afferent neurons of the PNS do✓✓ CORRECT ANSWER Atterent neurons of the PNS transmit impulses to the CNS
7. What do efferent neurons do✓✓ CORRECT ANSWER Etterent neurons transmit impulses to ettectors
8. What are the 2 parts of the PNS✓✓ CORRECT ANSWER Autonomic system (ANS)
Somatic nervous system (SNS)
9. What part of the nervous system controls voluntary movement? ex: contraction of skeletal muscle:
Somatic nervous system (SNS)
10. What part of the nervous system controls involuntary movement?
Ex: contraction of smooth/ cardiac muscles/ glandular secretions: Autonomic ner-vous system (ANS)
11. What are the 2 parts of the Autonomic nervous system (ANS)✓✓ CORRECT ANSWER Parasympathetic division
Sympathetic division
12. Activates the "fight and flight" response preparing the body for action by increasing heart rate, dilating
pupils, bronchial tubes, and suppressing functions that are not required for immediate survival: Sympathetic
division
13. What does the sympathetic division do✓✓ CORRECT ANSWER fight or flight
increasing heart rate, dilating pupils, bronchial tubes, and suppressing functions that are not required for immediate survival
14. "Rest and digest"
functions by decreasing heart rate, constricting pupils, bronchial tubes, and promoting digestion: Parasympathetic
division
15. What does the parasympathetic division do✓✓ CORRECT ANSWER "Rest and digest" functions
by decreasing heart rate, constricting pupils, bronchial tubes, and promoting digestion
16. What are the 2 neuron pathways of the autonomic nervous system (sym-pathetic + parasympathetic):
Preganglionic neuron
,Postganglionic neuron
17. what does the preganglionic neuron do✓✓ CORRECT ANSWER runs from the CNS to a ganglion
18. what does the postganglionic neuron do✓✓ CORRECT ANSWER innervates the ettector
19. What do the preganglionic neurons of the sympathetic nervous system release✓✓ CORRECT ANSWER
acetylcholine (ACh)
which is the stimulus for the release of norepinephrine from postganglionic neurons
20. What do the postganglionic neurons of the sympathetic nervous system release✓✓ CORRECT ANSWER
norepinephrine
21. What does norepinephrine do✓✓ CORRECT ANSWER helps control alertness and arousal Acts
on target tissues promoting a rapid and unified response
- heart rate increases
- respiration rate increases
- blood flow to the heart and skeletal muscle increases
- Pupils dilate
- Glycogen is broken down
22. What do both the preganglionic and postganglionic neurons of the parasympathetic nervous system
release✓✓ CORRECT ANSWER acetylcholine
23. The nervous system stimulates events that are slower-paced and less essential for
immediate survival: parasympathetic
24. What does the parasympathetic nervous system do to the body along with the release of acetylcholine✓✓
CORRECT ANSWER - Heart rate decreases
- Respiration rate decreases
- Blood flow is directed to digestive organs
- Peristalsis is promoted
- Pupils constrict
- Glycogen is synthesized
25. What are sensory neurons✓✓ CORRECT ANSWER atterent neurons that deliver impulses to the CNS
, 26. Mechanoreceptors: response to changes in pressure or tension
respond to touch, pressure, vibration, stretch, and itch
27. What are cutaneous touch receptors that are examples of mechanorecep-tors✓✓ CORRECT ANSWER - Meissner's
corpuscles
- Merkel's disks
- Pacinian corpuscles
- Ruflni endings
- Muscle spindles that detect stretching of skeletal muscle
- Receptors of the inner ear that detect vibrations
28. What are chemoreceptors✓✓ CORRECT ANSWER Olfactory receptors and taste receptors that detect the presence of chemicals
29. What are photoreceptors✓✓ CORRECT ANSWER The rod and cone cells of the eye that responds to light
30. What are thermoreceptors✓✓ CORRECT ANSWER Sense both absolute temperature and changes in temperature
31. What are nociceptors✓✓ CORRECT ANSWER Detect pain
32. What are exteroceptors✓✓ CORRECT ANSWER Sensory neurons near the body surface that transmit information about the external environment
33. What are proprioceptors✓✓ CORRECT ANSWER Senosory neurons within the inner ear, skeletal muscles, and joints that provide information about
movement, position, and equilibrium
34. What are interoceptors✓✓ CORRECT ANSWER Sensory neurons of visceral organs and blood vessels that provide infor-mation about internal
stimuli
35. Once sensory information has been processed, what neurons transmit the impulse away from the CNS to activate
muscles and glands✓✓ CORRECT ANSWER Ettector neurons
36. Where do effector neurons transmit impulses in the CNS and what do they activate✓✓ CORRECT ANSWER ettector
neurons transmit the impulse away from the CNS to activate muscles and glands
37. Where do all motor neurons of the somatic division run✓✓ CORRECT ANSWER run directly from the CNS to the ettector
without synapsing without another neuron
38. How many neuron pathways does the autonomic division use✓✓ CORRECT ANSWER two-neuron pathways
39. What is the main function of the nervous system✓✓ CORRECT ANSWER It is responsible for coordinating and controlling all of
the activities of the body
