50 terms

Anatomy Practice Test 2

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The second neuron in the autonomic motor pathway is called
postganglionic neuron
Autonomic plexuses include the
cardiac plexus, pulmonary plexus, celiac plexus, renal plexus
The sites of olfactory transduction are the olfactory hairs, which are
cilia projecting from the dendrites of first-order neurons
Olfactory sensations reach the brain via
cranial nerve I
The receptors on the tip of the tongue are most sensitive to
none, the concept of the tongue map is outdated
In order for a substance to be tasted, it must be
dissolved in saliva
Fungiform papillae contain
gustatory cells
The lacrimal apparatus produces
tears
Lacrimal fluid contains a protective bacterial enzyme called
lysozyme
Venous sinus (Canal of Schlemm) exits the eye through an opening in the
sclera
"Bloodshot eyes" are the result of dilation of blood vessels in the
conjunctiva
The function of the ciliary processes is to
produce aqueous humor
The lens is held in place by the
suspensory ligaments
Intraocular pressure is produced mainly by
aqueous humor
Nutrients are provided to the posterior surface of the retina by blood vessels in the darkly pigmented portion of the vascular tunic known as the
choroid
The retina is held in place by the
vitreous body
Photoreceptors are located in the
retina
The blind spot of the retina is so-called because
there are no rods or cones there
The central fovea is
the area of highest visual acuity on the retina
In the process of forming an image on the retina, convergence occurs to allow
three-demensional image formation
Which of the following occurs when trying to focus on a close object
contraction of the ciliary muscle to make the lens more convex
The four refracting media of the eye, listed in the sequence in which they refract light, are
cornea (4), aqueous humor (3), lens (2), vitreous body (1)
Which of the following lists the route of impulse transmission in the correct order
photoreceptors, bipolar cells, ganglion cells, optic nerve, optic chiasm, optic tract
The auditory (Eustachian) tube connects the
middle ear and the nasopharynx
The ossicles are the major structures of the
middle ear
The middle ear is normally filled with
air
The role of the stapedius muscle is to
limit vibration of the stapes
Receptor potentials are produced when
stereocilia bend against the tectorial membrane
The primary function of the utricle and saccule is to
monitor static equilibrium
Which of the following sequences correctly traces the sound wave across the middle ear
tympanic membrane (1), malleus (2), Incus (3), stapes (4), oval window (5)
The endolymph filled ____ lies between the perilymph filled ____and the ____ separated by the ____ and ____ membranes respectively
cochlear duct, scala vestibuli, scala tympani, basilar, vestibular
The buffy coat of centrifuged blood consists mainly of
white blood and platelets
The most abundant of the plasma proteins are the
albumins
The total blood volume in an average adult is about
5 liters
ALL of the following are important functions of plasma proteins EXCEPT
transportation of oxygen
The percentage of total blood volume occupied by RBCs is called the
hematocrit
Pluripotent stem cell produce
all answers are correct
"5 million per microliter" is a value falling within the normal adult range for the number of
erthrocytes
Erythropoietin is synthesized by the
kidneys
Oxygen is transported by red blood cells by binding
the iron ion in the heme portion of hemoglobin
The primary organs whose macrophages are responsible for phagocytizing worn-out red blood cells are the
spleen and liver
Agranular leukocytes that are phagocytic are the
monocytes
The most abundant of the leukocytes are the
neutrophils
The formed elements that are fragments of larger cells called megakaryocytes are
thrombocytes
When blood red cells wear out, the iron is saved and most of the remainder of the hemoglobin is
also saved
A clot in an unbroken vessel is called
thrombosis
So-called natural killer cells are a form of
lymphocyte
Type A blood has an isoantibody called
agglutinin A
Which of the following indicates a normal differential count in a healthy adult
65% neutrophils, 25% lymphocytes, 6% monocytes, 3% eosinophils, 1% basophils
Type O is considered the theoretical universal
donor because there are no A or B isoantigens on RBCs