Homeostasis Test Flashcards
Multiple choice
B D B A D C C D B B
Three receptors
Smell
Touch
Sight
Stimulating of dropped pen
- Mouse geared the pen drop.
- Sends sensory impulse to sensory neurone
- This goes to the central nervous system
- message passed to motor neurone
- this then triggers the muscles to contract and make the mouse jump
What is a hormone
A chemical messenger which influences the body that is transported through blood
What organ produces a hormone
Pancreas
How are the organs transported to their target organs
Through the blood
How is FSH, Oestrogen, and LH used in the menstrual cycle.
FSH- stimulates the production of eggs for fertilisation.
Oestrogen-it is produced in the pituitary glands which is negative feedback and brings FSH to a stop.
LH is then released as the egg is relayed causing oestrogen production to stop. This is negative feedback
13
Sensory at top
Motor left
Central right
How are Blood glucose levels controlled
If the blood sugar levels are too high then insulin is produced by the pancreas.
This causes glucose to be turned into glycogen and is stored in the liver
If the blood sugar levels are too low then glucagon is produced causing the glycogen to be turned into glucose
How does the contraceptive pill work
It stops the production of FSH which stops an egg forming.
