Quiz 6

Question 1

decidual reaction

Answer 1

differentiation of fibroblast (become enlarged) between the fetus (that is implanted in the uterine wall) and the basal region of the uterus wall. Marks the end of invasion of the fetus into the uterus.

Question 2

vasa recta

Answer 2

hairpin loops of blood capillaries that extend into and nourish the medullar pyramids

Question 3

juxtaglomerular apparatus

Answer 3

macula dense of distal tubule and afferent arteriole and extra-glomerular mesangial cells involved in auto regulation of urine formation and renin release

Question 4

retinal pigmented epithelium

Answer 4

pigmented outer layer of cells in retina involved in vitamin A storage, phagocytosis of rod tips, absorption of light, and the blood retina barrier

Question 5

four mechanisms of kidney filtration and renal feature of each:

Answer 5

• filtration (thin filter in glomerulus)
• active secretion (pumping of NaCl)
• passive diffusion (membrane perméable to water/urea)
• selective absorption (brush border to trap/absorb proteins)

Question 6

give four similarities and four differences between oogenesis and spermatogenesis

Answer 6

SIMILARITIES
-both have mitosis
-both have meiosis
-both produce haploid cells
-both produce gametes
DIFFERENCES
-in males, mitosis continues in adults
-in males, meiosis doesn't stop/start/stop/start
-in males, 4 gametes are produced from primary
-they occur in different sexes

Question 7

phagocytosis is a prominent function of certain cells within the eye. give the function and cells involved, as well as their contribution.

Answer 7

• phagocytosis
• retinal pigmented epithelium
• gets rid of growing tips of rods

Question 8

give cells in eye that function in transport and how they contribute.

Answer 8

• transport
• corneal transport endothelium
• clearness of cornea

Question 9

give cells in eye that function in secretion and how they contribute.

Answer 9

• secretion
• ciliary process
• integrity, fluid pressure of the eye

Question 10

give cells in eye that function in absorption and how they contribute to eye.

Answer 10

• absorption
• trabecular meshwork
• resists outflow of fluid and maintains pressure of the eye

Question 11

_______ reduce energy needed for breathing; reduce surface tension by lubrication of alveolar walls on air space surface.

Answer 11

lamellar bodies

Question 12

______ was derived from part of the wall that was enfolded as the glomerulus was embedded into the wall of the early nephron.

Answer 12

podocyte

Question 13

_____ are produced by theca interna and are aromatized to ____ by ____ cells

Answer 13

androgens
estrogen
follicular cells/granulosa cells

Question 14

which hormones from pituitary and which steroid from ovary are highest in blood concentration during early secretory phase?

Answer 14

• pituitary: LH after LH surge/ovulation

- ovary: progesterone from the CL