The Brain And Nervous System

Question 1

1) Pupil

Answer 1

To let light into your eyes

Question 2

2) Conjunctiva

Answer 2

Provides the eyes with protection and lubrication

Question 3

3) Iris

Answer 3

Regulates the amount of let via your eye muscles

Question 4

4) Cornea

Answer 4

Transparent to let light shine through

Question 5

5) Lens

Answer 5

Refracts light for the retina.

Question 6

6) Retina

Answer 6

Contains light receptors

Question 7

7) Choroid

Answer 7

Brings oxygen and nutrients to the eye, blood vessels and pigments.

Question 8

8) Sclera

Answer 8

Fibrous; muscles attached to the sclera.

Question 9

9) Retina blind spot

Answer 9

The place where the optic nerve meets the eyeball.

Question 10

10) Optic nerve

Answer 10

Sends impulses and visual messages to the brain.

Question 11

Regions of the ear

Answer 11

1) Outer
2) Middle
3) Inner

Question 12

1) Pinna

Answer 12

Collects sound waves

Question 13

2) Auditory ear canal

Answer 13

Collect sound waves to the eardrums

Question 14

3) Tympanum

Answer 14

Sends vibrations to the middle of the ear

Question 15

4) Eustachian tube

Answer 15

Maintains the pressure around the eardrum

Question 16

5) Round window

Answer 16

Prevents distortion from happening

Question 17

6) Ossicles

Answer 17

Amplifies sound waves

Question 18

7) Oval window

Answer 18

Conducts sound waves to the inner ear

Question 19

8) Semicircular canals

Answer 19

Regulates balance and sense head positioning.

Question 20

9) Auditory nerve

Answer 20

Connects impulses to the brain

Question 21

10) Cochlea

Answer 21

Sound waves are converted into impulses

Question 22

Define metabolism

Answer 22

All the energy conversions and chemical reactions that occur in a cell

Question 23

Define excretion

Answer 23

To get rid of metabolic waste products

Question 24

Secretion

Answer 24

To produce useful substances such as saliva, enzymes, bile

Question 25

Defecation

Answer 25

To get rid of undigested residues

Question 26

Excretory products in the skin

Answer 26

— sweat
— excess salts
— urea

Question 27

Excretory products from the lungs

Answer 27

— carbon dioxide
— water as water vapor

Question 28

Excretory product from the liver

Answer 28

— bile pigments

Question 29

Excretory products from the large intestine/ colon

Answer 29

— salts
— bile pigments and cholesterol

Question 30

Excretory products from the kidneys

Answer 30

urine includes:
— water
— excess salts
— urea
— pigments
— foreign substances

Question 31

Structure is f the urinary system includes what?

Answer 31

— vena cava inferior
— aorta
— renal vein
— renal artery
— right kidney
— abdominal activity
— bladder
— ureter
— urethra

Question 32

What is the aorta also known as?

Answer 32

The main artery

Question 33

What is the function of the renal artery?

Answer 33

To carry oxygenated blood

Question 34

What is the function of the kidney?

Answer 34

To clean and the blood and to make sure their is energy in the body

Question 35

What is also another way in which the skin excretes waste?

Answer 35

Plasma