Chapter 34:
Protection, Support, and Locomotion
Practice Test
1.
Muscle that is not under conscious control is called ___________.
a.
skeletal
b.
involuntary
c.
filamentous
d.
striated
Hint
2.
Which of the following is NOT found in the epidermis?
a.
hair follicles
b.
melanin-containing cells
c.
keratin-containing cells
d.
opening to sweat pores
Hint
3.
What structures attach bones to bones?
a.
filaments
b.
tendons
c.
ligaments
d.
joints
Hint
4.
What type of muscles found in internal organs have a slow, prolonged muscle contraction?
a.
skeletal
b.
smooth
c.
voluntary
d.
cardiac
Hint
5.
What is the role of osteoblasts?
a.
They stimulate the release of minerals, especially calcium, from the bones.
b.
They digest joints, causing painful arthritis resulting from bumps of bone inside the joint.
c.
They secrete a substance that forms the embryonic cartilage framework.
d.
They secrete a substance in which minerals are deposited to form bone.
Hint
6.
One of the ways skin regulates the temperature of the body on a hot day is by ___________.
a.
producing sweat
b.
reducing access to the exterior
c.
increasing muscle contractions
d.
constricting blood vessels
Hint
7.
Which of the following is NOT a function of bone marrow?
a.
It produces some white blood cells.
b.
It produces cell fragments involved in blood clotting.
c.
It produces red blood cells.
d.
It stimulates cells to become osteoblasts.
Hint
8.
Which of the following is NOT a characteristic of voluntary muscle?
a.
It is found attached to the skeletal system.
b.
It can be consciously controlled.
c.
Microscopically, it has a striated appearance.
d.
It is found inside the digestive system.
Hint
9.
If you treated a muscle sarcomere with an enzyme that dissolved away thick filaments, what main substance would remain?
a.
myosin
b.
melanin
c.
lactic acid
d.
actin
Hint
10.
When muscles build up lactic acid, they eventually need oxygen. Why?
a.
Oxygen is the only source of energy for the muscles.
b.
Oxygen is used to break down the lactic acid.
c.
Oxygen combines with glucose to form more lactic acid.
d.
Oxygen bonds to the lactic acid to make it nontoxic.
Hint
11.
When you flex your forearm, which type of joint are you using?
a.
hinge joint
b.
ball-and-socket joint
c.
pivot joint
d.
gliding joint
Hint
12.
After skin is injured and a scab forms, the blood vessels dilate. Why do they dilate?
a.
to allow red blood cells to rush to the wound site
b.
to unite the wound edges to prevent bacteria from entering
c.
to allow white blood cells to rush to the wound site
d.
to take away heat from the wound site
Hint
13.
What is the functional unit of a muscle?
a.
myofibril
b.
sarcomere
c.
myosin
d.
ligament
Hint
14.
Beneath a scab of a wound, the cells begin to multiply by what process to fill in a gap?
a.
conjugation
b.
meiosis
c.
mitosis
d.
binary fission
Hint
15.
What is the role of calcium in muscle contraction?
a.
It causes the muscles to relax.
b.
It causes the muscle to utilize lactic acid fermentation.
c.
It causes breakdown of ATP.
d.
It causes attachments to form between myosin and actin.
Hint
