Nervous System

Question 1

What is the nervous system?

Answer 1

the body system that allows us to think, feel, remember, move, and be aware of the world around us
it coordinates all of our other systems in order to maintain homeostasis and respond to changing conditions

Question 2

What makes up the nervous system?

Answer 2

neurons and nerves

Question 3

What are the two parts of the nervous system?

Answer 3

the central nervous system and the peripheral nervous system

Question 4

What functions do the CNS and the PNS provide?

Answer 4

sensory, integrative, and motor

Question 5

What does the CNS consist of?

Answer 5

the brain and spinal cord

Question 6

What is the CNS?

Answer 6

the control center of the body, and the brain is responsible for deciding how our body reacts to stimuli

Question 7

What does the PNS consist of?

Answer 7

nerves that breach out of the CNS and connect it to other parts of the body

Question 8

What nerves make up the PNS?

Answer 8

cranial nerves that arise from the brain and spinal nerves that arise from the spinal cord

Question 9

What can the PNS be divided into?

Answer 9

the somatic nervous system and the autonomic nervous system

Question 10

What does the somatic nervous system consist of?

Answer 10

cranial and spinal nerves that connect the CNS to the skin and skeletal muscles

Question 11

Does the somatic nervous system deal with conscious or unconscious activities?

Answer 11

conscious

Question 12

What do the fibers in the autonomic nervous system connect the CNS to?

Answer 12

the heart, stomach, intestines, and glands

Question 13

Does the autonomic nervous system deal with conscious or unconscious activities?

Answer 13

unconscious (ex. breathing, heartbeat)

Question 14

What divisions can the autonomic nervous system be broken down into?

Answer 14

the parasympathetic division and the sympathetic division

Question 15

What is the sympathetic division?

Answer 15

the division that is responsible for sending out the “fight or flight” response that prepares the body for high energy expending, stressful, emergency situations

Question 16

What changes happen to your body when the sympathetic division sends out a response?

Answer 16

you get a burst of energy and strength, and you have more adrenaline pumping which causes you to feel less pain

Question 17

What is the parasympathetic division?

Answer 17

the division that is responsible for counterbalancing the sympathetic division - it sends out responses during normal, daily situations

Question 18

What changes happen to your body when the parasympathetic division sends out a response?

Answer 18

your heart rate decreases and your digestion increases

Question 19

What are the 3 functions of the nervous system?

Answer 19

sensory, motor, and integrative

Question 20

What is sensory function caused by?

Answer 20

nerves at the end of the PNS

Question 21

What do sensory nerves do (regarding sensory function)?

Answer 21

gather information by detecting changes inside and outside the body

Question 22

What external factors do sensory nerves monitor?

Answer 22

light and sound intensities

Question 23

What internal factors do sensory nerves monitor?

Answer 23

temperature and oxygen levels

Question 24

What do sensory receptors do (regarding integrative function)?

Answer 24

take environmental information and make it into nerve impulses that travel through the PNS to the CNS, and once in the CNS they are brought together and made into sensations, perceptions, and memories

Question 25

What does the information made during integrative function help our body do?

Answer 25

it helps it make conscious and subconscious decisions about what our body needs to do

Question 26

What is integrative function?

Answer 26

the process of analyzing information

Question 27

What happens during motor function?

Answer 27

effects that are deemed necessary by the CNS, ex. muscles contracting and glands secreting their contents