1.
are ways the body maintain a stable temperature.

shivering and changing heart rate

changing heart rate and panting

sweating and shivering

panting and sweating

2.
an organ is

the basic unit of structure of a tissue

the basic unit of function of a living thing

a group of tissues that work together

a group of cells with similar structures

3.
homeostasis keeps the internal conditions of the body stable external conditions.

because of

in reaction to

in response to

regardless of

4.
which type of muscle tires quickly during exercise?

breathing muscle

smooth muscle

cardiac muscle

skeletal muscle

5.
sweat reaches the skin’s surface through

cells

pores

follicles

glands

6.
which describes the relationship between tissues and organs?

organs and tissues perform the same jobs.

organs perform more complex jobs than tissues.

tissues are made of multiple types of organs.

tissues perform more complex jobs than organs.

7.
how do pairs of skeletal muscles work together?

one muscle pulls on the bone and the other pushes the bone.

both muscles extend at the same time.

both muscles contract at the same time.

one muscle contracts, and the other returns to its original length.

8.
what is a function of the skeleton?

storing fat and nutrients

obtaining oxygen

sending electrical signals

providing shape for the body

9.
what is a result of adrenaline?

repeated movements

increased heart rate

decreased breathing

constant temperature

10.
muscle tissue to make body parts move.

flexes

extends

expands

contracts

11.
messages are carried back and forth between the brain and other parts of the body by

digestive tissue

nervous tissue

the circulatory system

respiratory tissue

12.
use the diagram to answer the question.

which type of joint is joint a?

gliding

ball-and-socket

pivot

hinge

13.
exercise is important for muscles because it

prevents muscle injuries

gives muscles more energy

maintain strength and flexibility

prevents muscles from becoming tired

14.
what structure directs the activities of a cell?

nucleus

cytoplasm

cell membrane

cartilage

15.
use the diagram to answer the question.

which type of joint is joint d?

gliding

pivot

hinge

immovable

16.
a colored substance called to protect the skin from burning.

oil

melanin

vitamin d

bacteria

17.
during stressful situations

the heart beats faster and breathing increases

shivering starts and the heart beats faster

breathing increases and temperature drops

temperature drops and shivering starts

18.
what kind of motion is possible with a hinge joint?

backward or forward

side to side

rotating

sliding