Correct Answers
The taste receptor that amino acids such as glutamic acid activate is
a. sour.
b. salty.
c. bitter.
d. Umami - ANSWER d
Bitter receptors sense
a. alkaloids.
b. acids.
c. inorganic salts.
d. carbohydrates. - ANSWER a
Rods are more sensitive to light than cones, but cones are important for color vision.
True
False - ANSWER true
The ability to ignore your socks around your ankles demonstrates a.
general adaptation.
b. receptor integration.
c. interpretive assimilation.
d. sensory adaptation - ANSWER d
The sequence of information flow in response to biting into a slice of pizza is a.
perception, sensation, impulse send to CNS, sensory receptors activated.
b. sensory receptors activated, impulse sent to CNS, sensation, perception.
c. impulse sent to CNS, sensory receptors activated, perception, sensation.
d. impulse sent to CNS, sensory receptors activated, sensation, perception. - ANSWER
b
General senses result from stimulation of receptors in the head only.
True
False - ANSWER false
,Another name for pain receptors is
a. tactile corpuscles.
b. lamellated corpuscles.
c. nociceptors.
d. mechanoreceptors. - ANSWER c
Floaters are bowel movements that float due to a fatty diet.
True
False - ANSWER false
Synovial fluid moistens and lubricates the cartilaginous surfaces in a joint.
True
False - ANSWER true
A meniscus cushions articulating surfaces of bones.
True
False - ANSWER true
Oxygen debt in muscles may develop because of
a. the inability of respiratory and circulatory systems to supply enough oxygen to
skeletal muscles when used strenuously for a minute or two.
b. the inability of myoglobin molecules to store enough oxygen when skeletal muscles
are used strenuously for a minute or two.
c. too much oxygen used in forming pyruvic acid when skeletal muscles are contracted
strenuously for a minute or two.
d. too high a concentration of oxygen in the atmosphere. - ANSWER a
Arrange the following steps of muscle fiber contraction in the correct sequence.
1. The muscle impulse reaches the sarcoplasmic reticulum and calcium is released.
2. Thin filaments are pulled over the thick filaments.
3. Calcium floods the sarcoplasm and binds to troponin molecules leaving active sites.
4. The impulse arrives at the synapse and travels through the transverse tubules.
5. The muscle fiber shortens and contracts.
6. Myosin heads bind to exposed active sites on actin, forming cross-bridges. a. 6, 3, 1,
4, 2, 5
b. 2, 5, 3, 1, 4, 6
c. 4, 1, 3, 6, 2, 5
d. 3, 5, 2, 1, 6, 4 - ANSWER c
The acetabulum is
, a. a depression in the hip bone that receives the head of the femur.
b. a protuberance in the hip bone that attaches to the head of the femur.
c. the prominence of the hip.
d. the anterior portion of the hip bone. - ANSWER a
Binding sites on the surface of actin allow the formation of cross-bridges with molecules
of
a. ATP.
b. myosin.
c. troponin.
d. tropomyosin. - ANSWER b
At what age are nearly all bones completely ossified?
Birth
5 years
15 years
25 years - ANSWER 25
Which of the following correctly lists the steps of fracture repair in sequence?
a. A hematoma forms, granulation tissue and fibrocartilage develop, osteoclasts
and phagocytes clear away debris, bony callus forms.
b. A hematoma forms, osteoblasts arrive and produce new bone tissue, osteoclasts
and phagocytes clear away debris, granulation tissue forms.
c. Phagocytes clear away debris, osteoblasts remove damaged bone tissue, and a
hematoma forms.
d. A hematoma forms followed by formation of a bony callus that fibrocartilage
replaces. - ANSWER a
Osteoblasts are ______, whereas osteocytes are ______. a.
bone-forming cells; bone-dissolving cells
b. mature bone cells; bone-forming cells
c. bone-forming cells; mature bone cells
d. bone-dissolving cells; mature bone cells - ANSWER c
All of the following are functions of bones except a.
to protect certain internal organs.
b. to provide a source for red and white blood cells.
c. to provide a set point for the control of blood pressure and body temperature.
d. to store inorganic salts. - ANSWER c