Nervous System

Question 1

Function of Nervous System

Answer 1

Detect impulses from the senses and control center of the body

Question 2

Major Organs of Nervous System

Answer 2

Brain, spinal cord, senses and nerves

Question 3

Difference between Neurons and Neuroglia

Answer 3

Neurons (make 10%) and neuroglia (make 90%)

Question 4

Dendrite

Answer 4

Receive the nerve impulses from the senses or another neuron

Question 5

Soma

Answer 5

Body of the neuron that holds the nucleus

Question 6

Schwann Cells

Answer 6

Produce Myelin

Question 7

Node of Ranvier

Answer 7

Impulses jump from node to node, which increase speed of impulse

Question 8

Myelin

Answer 8

Insulates the axon

Question 9

Axon

Answer 9

Passageway for nerve impulses after cell body; end in axon terminal

Question 10

Axon Terminal

Answer 10

Button-like endings of axons through which axons make contact with other nerve cells

Question 11

CSF (Cerebrospinal Fluid)

Answer 11

Protects the brain by preventing the it from contacting the skull

Question 12

Cerebrum

Answer 12

Largest part of brain, divided into 2 hemispheres

Question 13

Thalamus

Answer 13

2 bulb-shaped halves in the center of the brain,

relays sensory impulses

Question 14

Hypothalamus

Answer 14

Controls hormones released by pituitary gland, responsible for autonomic processes

Question 15

Brainstem

Answer 15

Located between the cerebrum and spinal cord

Question 16

Cerebellum

Answer 16

Second largest part of brain, responsible for coordinating the “involuntary” movements

Question 17

Spinal Cord

Answer 17

31 pairs of spinal nerves branch out from the spinal cord, connecting to all parts of the body

Question 18

Frontal Lobe

Answer 18

Voluntary movements, decision-making, memory and verbal communication

Question 19

Parietal Lobe

Answer 19

Sensations and body position

Question 20

Occipital Lobe

Answer 20

Visual processing- vision & memory of objects

Question 21

Temporal Lobe

Answer 21

Memory, comprehension & pronunciation of words, smell/sound, emotional association of memories

Question 22

Midbrain (Mesencephalon)

Answer 22

Relays info to cerebrum, controls body movements and postures

Question 23

Pons (Bridge)

Answer 23

Carries info from one side of brain to the other and central control of breathing

Question 24

Medulla Oblongata

Answer 24

Transmits between spinal cord and the brain,

controls blood pressure, heart rate, swallowing, and coughing

Question 25

Cochlea

Answer 25

A bony snail-shaped structure containing membranes filled with fluid in the ear

Question 26

Cornea

Answer 26

Made of thick, transparent tissue on the eye

Question 27

Pupil

Answer 27

The opening in the center of the iris

Question 28

Iris

Answer 28

Located behind the cornea (colored part)

Question 29

Retina

Answer 29

Located in the back of the eye

Question 30

Lens

Answer 30

A semi-solid disc that directs light waves towards the retina

Question 31

Farsighted vs Nearsighted

Answer 31

Farsighted: far things are clear, vice versa

Question 32

Malleus

Answer 32

(hammer)

Question 33

Incus

Answer 33

(anvil)

Question 34

Stapes

Answer 34

(stirrup)

Question 35

Papillae

Answer 35

The tongue is filled with bumps (many are tastebuds)