Introduction to the nervous system

Question 1

What makes up the Central Nervous System (CNS)

Answer 1

Brain and spinal cord

Question 2

What does the brain do?

Answer 2

Processes information, controls voluntary actions (movement) and involuntary actions (heartbeat)

Question 3

What does the spinal cord do?

Answer 3

Is a pathway for sensory and motor signals between the brain and rest of body.

Question 4

What makes up the Peripheral Nervous System (PNS)

Answer 4

Somatic N.S. and Autonomic N.S.

Question 5

What does the Somatic N.S. do?

Answer 5

Controls VOLUNTARY movements (e.g. skeletal muscles)

Question 6

What does the Autonomic N.S. do?

Answer 6

Regulates INVOLUNTARY functions (e.g. heart rate/digestion)

Question 7

What are the two divisions of the nervous system?

Answer 7

Central Nervous System (CNS) and Peripheral Nervous System (PNS)

Question 8

What makes up the Autonomic N.S. (ANS)

Answer 8

Sympathetic Nervous System (SNS) and Parasympathetic Nervous System (PNS)

Question 9

What does the Sympathetic N.S. do? (SNS)

Answer 9

Activates during excersize or stress, increases heart rate and dilates airways.

Question 10

What does the Parasympathetic N.S. do? (PNS)

Answer 10

Dominates during rest, slows down heart rate and promotes digestion to conserve energy.

Question 11

What are the three functions of the Autonomic N.S. (ANS)

Answer 11

Cardiac, Breathing/Ventilation, Temperature control

Question 12

What is the cardiac function in the ANS

Answer 12

As intensity increases, heart rate and contractility increase to meet demand for oxygen

Question 13

What is the breathing/ventilation function in the ANS

Answer 13

As intensity increases, respiratory rate increases to facilitate oxygen intake during excersize.

Question 14

What is the function of temperature control in the ANS

Answer 14

Regulates heat production and sweating to maintain optimal body temperature

Question 15

What are the three receptors in the nervous system?

Answer 15

Proprioceptors, Baroreceptors, Chemoreceptors

Question 16

Function of Proprioceptors

Answer 16

Provide feedback on body position, movement, and force. (Movement based)

Question 17

Function of Baroreceptors

Answer 17

Transmits information to the brain for heart rate. (Blood Pressure)

Question 18

Function of Chemoreceptors

Answer 18

Monitor levels of oxygen, carbon dioxide, and pH in blood (Chemicals in the blood [O2 + CO2])

Question 19

Definition of Proprioreceptors

Answer 19

Specialized sensory receptors located in muscles, tendons, and joints.

Question 20

Definition of Baroreceptors

Answer 20

Sensory receptors sensitive to changes in blood pressure.

Question 21

Definition of Chemoreceptors

Answer 21

Sensory receptors sensitive to chemical changes in the blood.