Human reproduction

Question 0

Sexual Reproduction

Answer 0

Two sex cells (gametes) combine
Gametes only have 1 copy of each chromosome
Variation- features from both parents
Only in reproductive organs
Slow

Question 1

Asexual reproduction

Answer 1

One parent
Used when plants/ animals need to replace cells
When cell divides so cells are identical to original (clones)
PMAT x1
Fast

Question 2

Internal Fertilization

Answer 2

Reptiles, mammals, birds
Transferring sperm to female without exposing to external environment
Requires more energy

Question 3

External fertilization

Answer 3

Less energy

More numbers

Question 4

LH and FSH secreted by what and what do they do?

Answer 4

Anterior pituitary gland
LH-stimulates release of egg (day14)
FSH-causes egg to develop, stimulates ovaries to produce estrogen

Question 5

Estrogen and progesterone secreted by what and what do they do?

Answer 5

Secreted by ovary
Estrogen- causes uterus lining to thicken
Progesterone-maintains thickened lining

Question 6

Female secondary sexual characteristics

Answer 6

Estrogen caused onset of puberty

Vagina, pelvis and uterus grow larger
Vagina begins to secrete fluid
Breasts grow larger
Pubic+ armpit hair grow
Fat deposited under skin of buttocks and thighs

Question 7

Male secondary sexual characteristics

Answer 7

Testosterone causes onset of puberty

Penis and testes grow larger
Prostate gland and seminal vesicles begin to secrete fluid
Larynx grows larger-deeper voice 
Pubic+ facial+ armpit hair grow
Skeletal muscles grow larger

Question 8

Where is site of fertilization?

Answer 8

Fallopian tubes

Question 9

Which structures involved with labor and delivery?

Answer 9

Uterus, cervix, vagina

Question 10

3 cycles?

Answer 10

Ovarian, hormonal, menstrual

Question 11

What does corpus luteum secrete?

Answer 11

Estrogen+ progesterone

Question 12

Spermatozoan?
Oocyte?
Follicle?

Answer 12

Sperm
Egg
Surrounding, nurturing egg

Question 13

Fertilization and implantation

Answer 13

The sperm travels through the cervix (uterus opening) uterus contractions assist sperm. (Resident cells attack sperm)
Then travel up Fallopian tube.
Then sperm burrow in egg-attach to special sperm receptors. Then 1sperm burrows and fertilizes egg.
Inside egg-male and female genetic material combine
Embryo-2-4 cells. Moves Along tube
-Zygote travels to uterus to implant
Embryo embeds in uterine lining (endometrium) and blastocyst sheds its surrounding membrane.