Homeostasis And Menstrual Cycle

Question 1

What does our body achieve through feedback mechanisms?

Answer 1

Homeostasis

Question 2

Define the ff.: Positive feedback and give an example

Answer 2

Greater secretion of hormones

Infrequent

Less associated with body maintenance

Childbirth - Baby takes up all space inside of the womb, stretch receptors activate and the hypothalamus excretes greater amount of oxytocin causing the female uterus to contract strongly until the baby is delivered.

Question 3

Define the ff.: Negative feedback and give an example

Answer 3

Inhibits production of hormones

Frequent process in the human body

Done to maintain stability

High water content in human body - When the hypothalamus senses a high water level in the body, a greater amount of antiduretic hormone is excreted, causing the kidneys to remove more water and produce more urine to extract from the body’s system.

Question 4

Also known as the period of the menstrual cycle.

Answer 4

Menstrual phase

Question 5

Increased FSH levels produced by the pituitary gland stimulates production of follicles, sac-like cells that contain immature eggs.

Answer 5

Follicular period

Question 6

Occurs when a mature egg is released from a follicle and transported to the fallopian tube awaiting fertilization by a mature sperm cell. This is the best time for pregnancy.

Answer 6

Ovulation

Question 7

What happens when the female is pregnant during the Luteal phase?

Answer 7

The corpus luteum continues to produce progesterone and estrogen to thicken the uterus lining.

Question 8

What happens if the female is not pregnant during Luteal phase?

Answer 8

If the female is not pregnant, the corpus luteum is absorbed, estrogen and progesterone levels decline, and the uterus lining is shed, resulting in a period.

Question 9

Menarche

Answer 9

First menstrual period of girls, occurs around the onset of puberty

Question 10

Menopause

Answer 10

Final menstrual period of women as a result of aging ovaries.