Anatomy
The elbow is _________ to the shoulder.
A) medial
B) lateral
C) inferior
D) proximal
E) distal
E) distal
An example of a positive feedback mechanism in the body is
a) dilation and constriction of blood vessels
b) fluctuations of body temperature
c) blood clotting
d) response of the pupil of the eye to light
c) blood clotting
Question: Which of the following is a location of thick skin?
a.Patellar region
b.Palmar region
c.Olecranal region
d.Dorsum of foot
b.Palmar region
The process of remodeling in bone involves the
a) inactivation of osteoclasts and increased activation of osteoblasts
b) activation of osteoclasts, and inactivation of osteoblasts
c) removal and replacement of the protein and mineral components of bone
d) formation of osteons by osteoclasts and destruction by osteoblasts
c) removal and replacement of the protein and mineral components of bone
In parts of the body where considerable expansion occurs, such as the urinary bladder, which type of epithelium would you expect to find?
a) cuboidal
b) pseudostratified
c) transitional
d) squamous
e) columnar
c) transitional
Absorption of shock and giving physical stability to the brain and spinal cord is provided by
a) dural sinus and subdural space
b) arachnoid and subarachnoid space
c) three layers of specialized meninges
d) cranium and intervertebral discs
c) three layers of specialized meninges
Question: Which of the following contains both thick and thin filaments?
a.I band
b.H zone
c.Z line
d.A band
d.A band
Even though melanocytes are of normal size and distribution, in the condition of albinism,
a) melanin is not produced by the melanocytes
b) sunlight insist production of melanin
C) there is a decrease in blood supply to the skin
d) melanocytes are destroyed before they mature
a) melanin is not produced by the melanocytes
Central canals
A) connect perforating canals to canaliculi
B) connect spongy bone to compact bone
C) are where blood cells are produced
D) are found only in spongy bone
E) are lined with periosteum
A) connect perforating canals to canaliculi
Considering the force of contraction of a skeletal muscle fiber, wave summation occurs because of
a) increased strength of action potentials on the plasma membrane
b) a decreased number of cross-bridges formed
c) an increase in Ca2+ concentration around the myofybrils
d) an increased number of motor units recruited
e) increased permeability of the sarcolemma to Ca2+
c) an increase in Ca2+ concentration around the myofybrils