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