Question

directions match each term in column a with its meaning in column b. write the correct letter on the line.
column a

1. arteries
2. voluntary muscles
3. excretory system
4. fatty layer
5. red marrow
6. eardrum
7. blood pressure
8. urine
9. veins
10. gallbladder
11. involuntary muscles
12. skeletal system
13. bronchioles
14. plasma
15. cornea

column b
a protects the bodys organs and keeps in heat
b narrow tubes that carry oxygen to the lungs
c blood vessels that carry blood away from the heart
d a thin tissue that vibrates when sound waves strike it
e the digestive organ that stores bile
f muscles you can control
g a clear layer of the eye
h blood vessels that carry blood to the heart
i the force of blood against the walls of blood vessels
j the network of bones in the body
k a series of organs that get rid of cell wastes in the form of urine
l the spongy material in bones that makes blood cells
m the liquid part of blood
n muscles you cant control
o liquid waste formed in the kidneys
directions write the letter of the word that best completes each sentence.

1. the ____ is often known as the voice box. a bronchus b dermis c pharynx d larynx
2. without the ____, light wouldnt get through to your optic nerve. a receptor cell b pupil c diaphragm d osteoporosis
3. ____ in your blood fight a battle against disease. a antibodies b synapses c capillaries d arteries
4. if you get something caught in your ____, youll have trouble breathing. a trachea b epidermis c urethra d cartilage
5. your ____ is like a movie screen in the back of your eye. a aorta b rectum c retina d ureter

Explanation:

1. Arteries are blood vessels that carry blood away from the heart. Voluntary muscles are muscles you can control. The excretory system is a series of organs that get rid of cell wastes in the form of urine. The fatty layer protects the body's organs and keeps in heat. Red marrow is the spongy material in bones that makes blood cells. The eardrum is a thin tissue that vibrates when sound - waves strike it. Blood pressure is the force of blood against the walls of blood vessels. Urine is liquid waste formed in the kidneys. Veins are blood vessels that carry blood to the heart. The gallbladder is the digestive organ that stores bile. Involuntary muscles are muscles you can't control. The skeletal system is the network of bones in the body. Bronchioles are narrow tubes that carry oxygen to the lungs. Plasma is the liquid part of blood. The cornea is a clear layer of the eye.
2. The larynx is often known as the voice box. Without the pupil, light wouldn't get through to your optic nerve. Antibodies in your blood fight a battle against disease. If you get something caught in your trachea, you'll have trouble breathing. Your retina is like a movie screen in the back of your eye.

Answer:

1. 1. C
2. F
3. K
4. A
5. L
6. D
7. I
8. O
9. H
10. E
11. N
12. J
13. B
14. M
15. G
16. 16. D
17. B
18. A
19. A
20. C