PLEASE ANSWER THEM ALL FAST I WILL GIVE BRIANLEST TO THE CORECT ONE. 1. Enter the correct term in the blanks.

a. The circulatory system is made up of the heart plus all of the and .

b. When we breathe, a large muscle called the helps us draw oxygen into our lungs.

c. The filter our blood.

d. The right side of the heart pumps blood only to the .

e. The human heart has chambers.

f. The top chambers of the heart are each called the .

g. The bottom chambers of the heart are each called the .

h. The liquid part of the blood is called .

i. The system breaks down food for the body's cells.

j. Digestion begins in the with the teeth and .

k. The liver produces , which acts on fat.

l. The system is the body's garbage service.

m. The are the main excretory organs.

2. Identify the correct term for each definition.

a. the bottom chamber of both sides of the heart

b. the dome-shaped muscle at the base of the chest cavity that contracts and lowers to draw oxygen into the lungs, then relaxes and lowers to push carbon dioxide out

c. the liquid part of the blood

d. the protein that colors red blood cells and allows them to carry oxygen to the tissues

e. the passageway out of the body for urine

f. the top chamber of both sides of the heart

g. the tube that carries food to the stomach

h. the two branches of the windpipe that descend to the right and left lungs

i. muscles that operate completely outside of conscious thought

j. tiny blood vessels where pickup of wastes and delivery of oxygen and food takes place tiny filtering units in the kidneys

k. a waste product that is made up of leftover parts of used proteins and is high in nitrogen

l. urea and other waste substances that are collected in the bladder

3. Identify the types and explain the function and any unique features of neurons.

4. Name the structures of the central nervous system and the peripheral nervous system and describe their functions.

5. Explain how the central nervous system and the peripheral system work together to keep the body activities in balance.