Physiology 1: General Organization Of Nervous System And Support Cells

Question 1

List the 2 divisions of the nervous system?

Answer 1

1- sensory (afferent) division.
2- motor (efferent) division.

Question 2

Which division of the nervous system is “converge”?

Answer 2

Sensory (afferent) division.

Question 3

Which division of the nervous system is “diverge”?

Answer 3

Motor (efferent) division.

Question 4

What are the 2 subtypes of the sensory (afferent) division?

Answer 4

1- somatic sensory.
2- visceral sensory.

Question 5

The sensory (afferent) division of the nervous system transmits information from _______ to ______.

Answer 5

From the periphery to the CNS.

Question 6

The motor (efferent) division of the nervous system transmits information from _______ to ______.

Answer 6

From the CNS to the rest of the body.

Question 7

Which division of the nervous system contains receptors?

Answer 7

The sensory (afferent) division.

Question 8

Which division of the nervous system sends information to effectors?

Answer 8

The motor (efferent) division.

Question 9

The somatic sensory receives sensory information from ______, _____, ______, _______ _____, _____ _____.

Answer 9

Skin, fascia, joints, skeletal muscles, special senses.

Question 10

The visceral sensory receives sensory information from ______.

Answer 10

Viscera.

Question 11

Why do patients in cases of visceral pain (e.g. dysmenorrhea) feel the pain in other places (e.g. back or leg pain)?

Answer 11

The visceral sensory is not as accurate as the somatic sensory, because it is not involved in the fight or flight response, and is not generally needed in life threatening situations.

Question 12

List the 2 subtypes of the motor (efferent) division?

Answer 12

1- somatic motor.
2- autonomic motor.

Question 13

Which subtype of the motor (efferent) division of the CNS is voluntary?

Answer 13

Somatic motor.

Question 14

Which subtype of the motor (efferent) division of the CNS is involuntary?

Answer 14

Autonomic motor.

Question 15

The somatic motor subtype innervates which organ?

Answer 15

Skeletal muscles.

Question 16

The autonomic motor subtype innervates which organs?

Answer 16

Cardiac muscles, smooth muscles, and glands.

Question 17

Ascending tracts are involved with which CNS division?

Answer 17

Sensory (afferent) division.

Question 18

Descending tracts are involved with which CNS division?

Answer 18

Efferent (motor) division.

Question 19

List the 3 levels of information termination in the CNS?

Answer 19

1- spinal cord.
2- brain stem.
3- cerebral cortex.

Question 20

List an example of information that terminates at the level of the spinal cord?

Answer 20

Body reflexes.

Question 21

List an example of information that terminates at the level of the brain stem?

Answer 21

Breathing.

Question 22

List an example of information that terminates at the level of the cerebral cortex?

Answer 22

Complex information (learning, reading, writing,ect..).

Question 23

List the 4 properties of the nervous system?

Answer 23

1- excitability and conductivity.
2- specializes in receiving information from the external and internal environments (sensory).
3- the information is processed, integrated and evaluated (integration).
4- give appropriate response (motor).

Question 24

List the 3 functions of the nervous system?

Answer 24

1- sensory function.
2- integrative function.
3- motor function.

Question 25

What are the 2 functions of the sensory function?

Answer 25

1- sensory receptors gather information.
2- information is carried to the CNS.

Question 26

What is the function of the integrative function?

Answer 26

Sensory information is used to create: sensations, memory, thoughts, decisions.

Question 27

What are the 2 functions of the motor function?

Answer 27

1- decisions are acted upon.
2- impulses are carried to effectors.

Question 28

The nervous system evolved for the purpose of survival, list 7 examples?

Answer 28

1- being attuned to the outside world.
2- responding-reflex and behavioral responses, flight, fight, acquisition of food.
3- maintaining hemostasis.
4- ensure adequate fluid and energy intake (drinking and feeding behavior).
5- ensures propagation of species (sexual behavior).
6- instinctual and emotional behavior.
7- higher functions of the nervous system; intellectual reasoning and learning, language-spoken and written, social behavior.

Question 29

Which part of the nervous system is responsible for being attuned to the outside world?

Answer 29

Sensory system and special senses.

Question 30

Which part of the nervous system is responsible for responding-reflex and behavioral responses, flight, fight, acquisition of food?

Answer 30

The motor system.

Question 31

Which part of the nervous system is responsible for maintaining hemostasis?

Answer 31

Mainly through the ANS.

Question 32

Which part of the nervous system is responsible for instinctual and emotional behavior?

Answer 32

The limbic system.

Question 33

Which part of the nervous system is responsible for higher functions?

Answer 33

The neocortex.

Question 34

What is the structural unit of the nervous system?

Answer 34

A neuron.

Question 35

What is the functional unit of the nervous system?

Answer 35

A reflex arc.

Question 36

What does the autonomic nervous system control?

Answer 36

1- cardiac muscle.
2- smooth muscle.
3- glands.

Question 37

What does the somatic nervous system control?

Answer 37

• skeletal muscles.
• body movements in response to stimuli in external environment.
• voluntary or behavioral responses.
• reflex response.