Nervous System and Nerves

Question 1

What is the Nervous System?

Answer 1

Well organized system that is responsible for coordinating many activities performed by the body

Question 2

What are Neurons?

Answer 2

Nerve cells

Question 3

What is the name for the study of the Nervous System?

Answer 3

Neurology

Question 4

What are the 3 parts within the Nervous System?

Answer 4

Central nervous system (CNS), peripheral nervous system (PNS), and autonomic nervous system (ANS)

Question 5

What does the Central Nervous System do?

Answer 5

Consists of the brain, spinal cord/nerves and cranial nerves. Controls consciousness and many mental activities, involuntary functions (seeing, hearing, smelling, feeling and tasting) and voluntary muscle actions

Question 6

What does the Peripheral Nervous System do?

Answer 6

System of nerves that connects the peripheral (outer) parts of the body to the CNS. Has both sensory and motor nerves

Question 7

What does the Autonomic Nervous System do?

Answer 7

Controls the involuntary muscles; regulates the action of smooth muscles, glands, blood vessels, heart and breathing

Question 8

What is the Brain?

Answer 8

Largest and most complex mass of nerve tissue in the body. Weighs 3lbs and has 12 cranial nerves. Controls sensation, muscles and glandular activity

Question 9

What is the Brain Stem?

Answer 9

Connects the spinal cord to the brain. Regulates functions such as breathing, heartbeat and blood pressure

Question 10

What is the Spinal Cord?

Answer 10

Continuation of brain stem

Question 11

What are Nerves?

Answer 11

Whitish cords made up of bundles of nerve fibers

Question 12

What are the 2 types of Nerves?

Answer 12

Sensory and motor nerves

Question 13

What are Sensory Nerves?

Answer 13

They carry impulses/messages from the sense organs to the brain

Question 14

What are Receptors?

Answer 14

Sensory nerve endings and are located close to the surface of the skin

Question 15

What are Motor Nerves?

Answer 15

They carry impulses from the brain to the muscles/glands

Question 16

What is a Reflex?

Answer 16

Automatic nerve reaction to a stimulus

Question 17

What are the nerves of the Arm and Hand?

Answer 17

Median, ulnar, radial and digitial

Question 18

What is the Median nerve?

Answer 18

Smaller sensory-motor nerve than the ulnar and radial nerves; with it’s branches it supplies the arm and hand

Question 19

What is the Ulnar nerve?

Answer 19

Sensory-motor nerve that with it’s branches affects the little-finger side of the arm and palm of hand

Question 20

What is the Radial nerve?

Answer 20

Sensory-motor nerve that with it’s branches supplies the thumb side of the arm and back of hand

Question 21

What is the Digital nerve?

Answer 21

Sensory-motor nerve that with it’s branches supplies the fingers

Question 22

What is the 10th Cranial nerve?

Answer 22

AKA Vagus nerve. Helps regulate the heart, breathing and digestion. Only nerve that “wanders” away from the head and neck and goes all the way down to abdominal region