Nervous System

Question 1

Central nervous system

Answer 1

Brain and spinal cord
Lies in the midline of the body

Receives and process info.

Question 2

Peripheral nervous system

Answer 2

Lies outside the cns

Contains cranial nerves and spinal nerves

Question 3

Neuron

Answer 3

Specialized nerve cell that transmit and process information from one body part to another.

Question 4

Action potential

Answer 4

Electrochemical signal or impulses

Question 5

Soma of neuron

Answer 5

Central body, contains nucleus

Question 6

Dendrites

Answer 6

Projections attached to the cell body. Receives a nerve impulse or signal from another neuron and send the impulses to the cell body.

Question 7

Axon

Answer 7

Single, long extension from cell body. Transmits the signal across the neuron.

Question 8

Axon terminal

Answer 8

Submits and transfers the signal to another neuron or muscle. “Synapse” (gap) with another neuron

Question 9

Myelin sheath

Answer 9

Covers axon. It increases the speed of an impulse or signal on an axon

Question 10

Synapse

Answer 10

A region where neurons nearly touch. Axon terminal of one neuron releases an impulse or signal to the dendrites of another neuron.

Question 11

Sensory neuron

Answer 11

Responds to a stimulus

Recieves the stimulus and transmits the signal to the cns.

Question 12

Inter neuron

Answer 12

Recieves signals from sensory neuron.
Stores and processes info
Decides how to respond to stimulus

Question 13

Motor neuron

Answer 13

Receives instructions from the interneuron on and send a signal to respond

Question 14

What protects the spinal cord?

Answer 14

Vertebral column

Question 15

Cerebrospinal fluid

Answer 15

Water cushion that protects the cns. Circulates around the brain and spinal cord

Question 16

Where are spinal nerves found?

How many pairs?

Answer 16

Between each none of the vertebral column.

31 pairs

Question 17

Route of communication

Answer 17

Sensory neuron enters into dorsal root.
Synapses with interneuron. Interneuron receives stores and processes this information.
Synapses with the motor neuron
Motor neuron leaves through the central root

Question 18

Medulla oblongota

Answer 18

Located at the bottom of the brain stem. Controls breathing, heartbeat/rate, blood pressure

Question 19

Pons

Answer 19

Located at the bulging center part of the brain stem. Responsible for sleep and wakefulness

Question 20

Cerebellum

Answer 20

Located behind the brain stem. Controls muscular and motor coordination

Question 21

Brain stem consists of

Answer 21

Medulla oblongota, pons, midbrain

Question 22

Midbrain

Answer 22

Relay station for tracts passing between forbrain and spinal cord or cerebellum

Question 23

Forebrain consists of

Answer 23

Thalamus, hypothalamus, cerebral cortex and corpus callosum

Question 24

Thalamus

Answer 24

Responsible for Sensation

Question 25

Hypothalamus

Answer 25

Located under thalamus. Regulates homeostasis. Secretes hormones ( regulates growth, metabolism, reproduction)

Question 26

Cerebral cortex

Answer 26

Thick outer layer covering the surface of the forebrain

Question 27

Corpus callosum

Answer 27

C shaped structure. Joins the right and left hemisphere of the brain.

Question 28

Left hemisphere

Answer 28

Motor functions of the right side side of the brain. Responsible for speech, language, math logic.

Question 29

Right hemisphere

Answer 29

Motor functions of the left side of the brain. Visual- spatial reasoning( music face recognition)

Question 30

Frontal lobe

Answer 30

Speech, motor control, higher intellectual functions and mental process

Question 31

Occipital lobe

Answer 31

Vision

Question 32

Parietal lobe

Answer 32

Sensation, Taste , reading

Question 33

Temporal lobe

Answer 33

Hearing and smell

Question 34

Cranial nerves

Answer 34

12 nerves. Located at the base of the brain

Question 35

What does the nervous system do?

Answer 35

Provides communication in the activities of the tissues and organs of the body