homeostasis Flashcards
what is homeostasis?
Homeostasis is the body’s ability to maintain stable internal conditions despite external changes.
what is a hormone?
a chemical messenger that works on target organs
how do hormones travel around the body?
through the bloodstream
which organ monitors and controls blood glucose levels ?
the pancrease
what is the master gland and why ?
The pituitary gland is often called the master gland because it controls the activity of many other hormone-secreting glands in the body.
what causes type 1 diabetes and how to treat it ?
- caused by genetics
- ## when the pancreas releases little to no insulin causing the person to have too high blood sugar levels
what causes type 2 diabetes and how to treat it ?
- unhealthy diet
- when the cells reject/ignore the insulin
- eating a well balanced diet (less carbs)
where is excess glucose stored ?
liver and muscles as glycogen
describe what is meant by negative feedback ?
Process that reduces the activity it regulates, maintaining balance.
what is the male sex hormone that triggers changes during puberty ?
testosterone.
what is the functions of the 4 hormones that control the menstrual cycle
FSH: Stimulates follicle growth.
LH: Triggers ovulation.
Oestrogen: Builds uterine lining.
Progesterone: Maintains uterine lining.
what is the female sex hormone that triggers changes during puberty ?
oestrogen
What is a hormonal method of contraception?
Give 2 examples and explain how they work.
Birth control pills and hormonal implants
What is a non-hormonal method of contraception? Give 2 examples and explain how they work.
Condoms: Barrier method that blocks sperm physically during intercourse.
Copper IUD: Contains copper, creates an inflammatory reaction toxic to sperm, preventing fertilization.
Explain how adrenaline prepares the body for a fight or flight response
Adrenaline increases heart rate, opens airways, releases glucose, raises blood pressure, and boosts alertness, preparing the body for action during a fight or flight response.
