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The physical process by which a single animal cell separates into two cells is called
A) cytosis.
B) mitosis.
C) cytokinesis.
D) phoresis.
E) meiosis.
Which of the following imaging techniques is used to monitor blood flow through
specific organs, such as the brain, heart, lungs, and kidneys?
A) PET scan
B) ultrasound
C) digital subtraction angiography
D) MRI
E) CT scan
The internal os connects the uterine cavity to the
A) cervical canal.
B) fundus.
C) fornix.
D) external os.
E) fimbra.
After food and gastric juices combine, the gastric contents are referred to as
A) bolus.
B) chunk.
C) chyme.
D) feces.
E) segments.
A(n) ________ is a homogeneous mixture containing a solvent and a solute.
A) emulsion
B) blend
C) compound
D) infusion
E) solution
Which of the following labels best matches osteocyte?
A) stem cell
B) dissolves matrix
C) mature bone cell
D) secretes organic matrix
E) immature bone cell
The bones of the forearm, or ________, consist of the radius and ulna.
A) olecranon region
B) brachium
C) antecubital region
D) antebrachium
E) cubital region
The citric acid cycle occurs in the
A) cytosol.
B) golgi apparatus.
C) mitochondrial intermembrane space.
D) mitochondrial matrix.
E) ribosome.
Figure 24-2 The Wall of the Small Intestine
What is the layer labeled "3"?
A) mucosa
B) submucosa
C) muscularis externa
D) muscularis mucosae
E) serosa
In the corticospinal pathway, the neuron that exits the spinal cord and enters the spinal
nerve is called the ________ neuron.
A) upper sensory
B) lower sensory
C) upper motor
D) lower motor
E) pyramidal
Two hormones that have opposing effects are called
A) antagonists.
B) agonists.
C) resistors.
D) synergists.
E) adjuvants.
The first heart sound ("lubb") is associated with
A) atrial systole.
B) closing of the atrioventricular valves.
C) opening of the atrioventricular valves.
D) closing of the semilunar valves.
E) opening of the semilunar valves.
The ________ is the portion of the endometrium not in contact with the chorion.
A) trophoblast
B) allantois
C) deciduas capsularis
D) decidua functionalis
E) decidua parietalis
The common name for the pollex is the
A) ear lobe.
B) belly.
C) big toe.
D) hand.
E) thumb.
After menopause, the production of two pituitary hormones increases. One of these is
A) LH.
B) prolactin.
C) estrogen.
D) progesterone.
E) andostenedione.
Identify the incorrect statement about a single motor unit.
A) The more neurons involved, the more powerful the contraction.
B) The smaller the number of muscle fibers, the more precise the movement.
C) Fine motor skills depend on the development of small motor units.
D) Some motor units include as many as 2000 muscle fibers.
E) Muscle fibers of one motor unit intermingle with the fibers of another motor unit.
