1) secondary spermatocytes each contain
a) 23 chromosomes.
b) 23 pairs of chromosomes.
c) twice the diploid number of chromosomes.
d) 46 pairs of chromosomes.
e) 46 chromosomes.
2) which of the following muscles compresses the abdomen?
a) diaphragm and intercostals
b) external oblique and latissimus dorsi
c) rectus abdominis and pectoralis major
d) transverse abdominis
e) external oblique, rectus abdominis, and transverse abdominis
3) the shape of the lens is controlled by the
a) pupillary sphincter muscles.
b) pupillary radial muscles.
c) ciliary muscles.
d) iris.
e) cornea.
4) the hormones that are important for coordinating the immune response are
a) thymosins.
b) corticosteroids.
c) aldosterones.
d) thyroxines.
e) somatotropins.
5)
figure 28-1 the male reproductive system
identify the structure labeled “4”
a) testis
b) prostate gland
c) seminal gland (seminal vesicle)
d) epididymis
e) ductus deferens
6) which of the following lies between the cerebrum and the brain stem?
a) medulla oblongata
b) pons
c) mesencephalon
d) diencephalon
e) cerebellum
7) the tip of a long bone is called the
a) epiphysis.
b) diaphysis.
c) epiphyseal plate.
d) metaphysis.
e) lamella.
8)
figure 21-2 veins
identify the vein labeled “15”
a) axillary
b) brachial
c) radial
d) basilic
e) ulnar
9) the white matter of the spinal cord is mainly
a) unmyelinated axons.
b) neuroglia.
c) schwann cells.
d) myelinated and unmyelinated axons.
e) nodes of ranvier.
10) the weight of the body is supported by the
a) distal metacarpals.
b) proximal metatarsals.
c) distal ends of the metatarsals.
d) calcaneus.
e) distal metacarpals and the calcaneus.
11) when electrons are transferred from one atom to another, and the two atoms unite as
a result of the opposite charges,
a) an ion is formed.
b) a molecule is formed.
c) a hydrogen bond is formed.
d) an ionic bond is formed.
e) a covalent bond is formed.
12) which of these statements about lymph flow in a node is false?
a) lymph enters in an afferent lymphatic.
b) lymph first enters the subcapsular space.
c) lymph flows past dendritic cells.
d) the efferent lymphatic exits at the hilum.
e) the afferent lymphatics enters at the hilum.
13) the blood cells involved in specific immunity are the:
a) neutrophils
b) monocytes
c) basophils
d) erythrocytes
e) lymphocytes
14) the following are major steps in the process of intramembranous ossification:
1. clusters of osteoblasts form osteoid that becomes mineralized.
2. osteoblasts differentiate within mesenchymal connective tissue.
3. spicules of bone radiate out from the ossification centers.
4. mesenchymal cells aggregate.
the correct order for these events is:
a) 4, 1, 2, 3
b) 2, 1, 3, 4
c) 4, 2, 1, 3
d) 2, 3, 1, 4
15) a membrane transport process is found experimentally to have a saturation limit.
which of the following is a possible property of the process?
a) energy-dependent
b) carrier-mediated
c) cotransport
d) active transport
e) all of the answers are correct.
16) in emphysema, which of these occur?
a) alveoli collapse
b) compliance increases
c) elevated pco2 in the blood
d) depressed po2 in the blood
e) all of the answers are correct.
17) muscle fibers differ from “typical cells” in that muscle fibers
a) lack a plasma membrane.
b) have many nuclei.
c) are very small.
d) lack mitochondria.
e) have large gaps in the cell membrane.
18) functions of the nasal cavity include all of the following, except
a) filtering the air.
b) warming the air.
c) humidifying the air.
d) acting as a damping chamber when coughing.
e) acting as a resonating chamber in speech.
19) homeostatic mechanisms that monitor and adjust the composition of body fluids
respond to changes in the ________ fluid.
20) the center of an atom is called the ________.
21) upon swallowing, food moves from the mouth into the ________.
22) unfocused “impressions” such as thirst originating in the hypothalamus are known
as ________.
23) synapses that receive norepinephrine as a neurotransmitter are called ________.
24) the lower part of the large intestine including the rectum receives blood from the
________.
25) blood is distributed from the surface of a bone to deeper central canals through
channels known as ________.
26) at a(n) ________ synapse, a neurotransmitter is released to stimulate the
postsynaptic membrane.