Lecture 17

Question 1

Oocyte is viable for ____

Answer 1

24h

Question 2

Spermatozoa Is viable for

Answer 2

4-6 days

Question 3

chemotaxis

Answer 3

movement of a motile cell or organism, or part of one, in a direction corresponding to a gradient of increasing or decreasing concentration of a particular substance.

Question 4

What guides sperm to the oocyte?

Answer 4

chemotaxis

Question 5

vasculature

Answer 5

the blood vessels or arrangement of blood vessels in an organ or part

Question 6

Fetal chorionic villi

Answer 6

tiny projections of placental tissue that look like fingers and contain the same genetic material as the fetu

Question 7

Human chorionic gonadotropin

Answer 7

maintains corpus luteum; stimulates fetal testis

Question 8

Placental Progesterone

Answer 8

suppresses uterine contractions, cervical plug, mammary gland development

Question 9

Placental Estrogen

Answer 9

uterine development (growth, blood supply, oxytocin receptors), breast duct development, etc

Question 10

Human placental lactogen

Answer 10

Structurally related to growth hormone and prolactin
- High in mother/low in fetus
Decreases maternal cellular uptake of glucose, enhances maternal lipolysis

Question 11

Renal Maternal adaptations to pregnancy

Answer 11

increased vasopressin levels increase blood volume
increased activity RAS sodium and fluid retention

Question 12

Cardiovascular Maternal adaptations to pregnancy

Answer 12

increased output

Question 13

Immune system Maternal adaptations to pregnancy

Answer 13

partially supressed

Question 14

Calcium Maternal adaptations to pregnancy

Answer 14

pregnancy associated hyperparathyroidism
- calcium transfer to fetus
increased calcitonin to limit mobilization of maternal bone

Question 15

How is Labour Triggered?

Answer 15

Before birth, relaxin released from ovary and placenta loosens the ligaments in the pelvic bone and cause the cervix to soften

Question 16

Parurition

Answer 16

the action of giving birth to young; childbirth.

Question 17

What hormones are necessary for breast milk?

Answer 17

Estrogens and progesterone needed for the development of mammary glands but inhibit milk production
- Prolactin
-Oxytocin

Question 18

Post birth prolatin role

Answer 18

prolactin are epithelial milk-producing cells