Which pituitary cell type secretes luteinizing hormone?
D. gonadotropic cells
Which gland is comprised of chief cells that are arranged in thick, branching cords and secrete a hormone, which raises low blood calcium levels?
A. parathyroid gland
Glucocorticoids, which stabilize blood glucose levels, are secreted by the:
B. B and C
b. zona fasciculata
c. zona reticulata
Which hormones are found in the neurohypophysis?
B. ADH and oxytocin
The right ventricle:
C. pumps blood out of the heart to the pulmonary circuit
The superior surface of the heart is the:
A. base
The prominent muscles that run along the inner surface of the ventricles and which are attached to chordae tendinae are:
A. papillary muscles
Besides transporting respiratory gases, what other functions are performed by erythrocytes?
B. none: transporting oxygen and carbon dioxide is their only function
Neutrophils and monocytes are types of:
D. leukocytes
the bulges that give the lymphatic vessels the "string of beads" appearance is due to:
B. closely spaced valves within the vessels
The most superior branch of the abdominal aorta, which supplies the liver, stomach, esophagus, gallbladder, duodenum, pancreas, and spleen is:
B. the celiac trunk
Which is the least common type of white blood cell?
D. basophil
Which of the following applies to elastic arteries?
C. the tunica media of these arteries contain a high density of elastic fibers and relatively few smooth muscle cells
The right common carotid artery and right subclavian arteries are branches of the:
C. brachiocephalic trunk
After leaving the thoracic cavity and passing over the outer border of the first rib, the subclavian artery becomes the:
B. axillary artery
Which blood cell lacks a nucleus?
C. mature RBC
Capillaries whose endothelial cells are connected by tight junctions are called:
C. continuous capillaries
An artery can be distinguished from a vein by all of the following means except:
C. in a cross section, the lumen of a vein appears to be thrown into folds, while that of an artery is smooth
Which of these is not part of a lymph node?
E. white pulp
Muscular arteries:
D. have the attributes of A and C
a. have a thick tunica media with a large amount of smooth muscle fiber within them
c. are exemplified by the external carotid, brachial, and femoral arteries
Which artery delivers blood to most of the large intestine?
C. superior mesenteric artery
Which layer of blood vessels consists of collagen and elastic fibers, with cells and fibers running longitudinally?
A. tunica externa
Metarterioles are structural intermediates between which of the following?
E. arterioles and capillaries
Which of the following is defined by the "lub" sound during the cardiac cycle?
A. closing of atrioventricular valves at the start of ventricular systole
The ability of leukocytes to move through vessel walls is called:
A. diapedesis
Which of the following is the primary source of plasma proteins?
B. liver
And excessive platelet count (≥1,000,000 per ul), indicating accelerated platelet formation in response to infection, inflammation, or cancer, is called:
D. thrombocytosis
Normal erythropoiesis is myeloid tissues requires adequate supplies of amino acids, iron, and:
B. vitamin B12
The basic functional unit of the liver is the:
A. lobule
Which of the
following in not a function of the
respiratory system?
A. protection from dehydration by filtering water out of the air
Which of the following is a small intestine feature that increases the
surface area for digestion and absorption?
a .cilia
b. microvilli
c. haustra
d. teniae coli
e. rugae
b. microvilli
Which of the following absorbs digested fats?
A. lacteals
Contraction of the cremaster muscle:
D. moves the testis closer to the body cavity
An hepatic (portal) triad consists of branches of the:
A. hepatic portal vein, hepatic artery, and bile duct
The ureters:
B. have a layer of transitional epithelium
The process whereby ovum production occurs is:
initiate spermatogenesis
d. continuous throughout the life of the individual
e. none of the above
C. oogenesis
Compared with the right primary bronchus, the left primary bronchus is:
E. none of the above
Which of the following is a function of Sertoli cells (nurse cells)?
E. all of the above
Which cells produce surfactant?
D. Type II cells
The left lung:
B. has a cardiac notch
Which arteries directly supply the basilar layer of the endometrium?
D. straight arteries
The mechanism of urine production in the uriniferous tubule, a process in which most of the nutrients, water and essential ions are reclaimed from the filtrate is called:
C. reabsorption
Which of the following is located on the posterior wall of the bladder interior, defined by the openings for both ureters and for the urethra?
E. trigone
The layer, which adheres directly to the kidney's surface is the:
A. fibrous capsule
Which female reproductive organ is homologous to the corpus
spongiosum?
D. vestibular bulbs
Blood exits the glomerulus via the:
D. efferent arteriole
Which structure(s) marks the boundary between the superior nasopharyx
and the rest of the pharynx?
E. soft palate
Which layer of the tracheal wall contains seromucous glands?
B. submucosa
Which structure(s) is/are found in the large intestine?
C. teniae coli
Which structure leads directly from the gallbladder toward the porta hepatis?
E. cystic duct
The pancreatic and pancreato-duodenal arteries are major branches from the:
D. common hepatic, superior mesenteric, and splenic arteries
Which layer appears in the inferior third of the ureters?
C. external longitudinal smooth muscle layer
Compression of which structure(s) compresses the urinary bladder, expelling its contents into the urethra?
C. detrusor muscle
Which phase of the ovarian cycle involves a weakening and rupture of the follicle wall?
