Ch 4 Test - Health

Muscles are either voluntary, like skeletal muscles, or ________, like cardiac and smooth muscles.

• involuntary

• flexible

• rigid

• elastic

The _______ system is the body's communication network.

• nervous

• digestive

• circulatory

• respiratory

One part of the brain stem, the _______, controls automatic activities such as breathing.

• medulla

• cerebellum

• thalamus

• hippocampus

_______ are automatic responses to heat or pain.

• reflexes

• thoughts

• emotions

• reactions

The _______ in the middle of the eye adjusts its size to let in the right amount of light.

• pupil

• lens

• retina

• cornea

The ear picks up _______ that are transferred to the auditory nerve and the brain.

• vibrations

• colors

• textures

• shapes

The endocrine system includes glands that produce _______, which control the body's functions.

• hormones

• enzymes

• vitamins

• proteins

White blood cells increase to fight __________.

• infections

• allergies

• dehydration

• fatigue

The force of blood on the walls of the blood vessels is __________.

• blood pressure

• blood flow

• blood volume

• blood viscosity

The __________ is where most of the breakdown of food into chemicals takes place.

• small intestine

• stomach

• large intestine

• esophagus