B5- Homeostasis and response Flashcards
What is Homeostasis?
Maintaining a stable internal environment
What does denature mean?
Too hot
What does dormant mean?
Too cold
What is the central nervous system?
Connected to the body by sensory and motor neurones
What do sensory neurones do?
Send electrical impulses from receptor to brain.
What do motor neurones do?
Send electrical impulses from brain to effector (muscles and glands)
What is the order of the CNS? Reflex arc?
stimulus-receptor-sensory neurone-CNS-motor neurone-effector-response
What is a synapse?
A synapse is the connection between the neurones. The nerve signal is transferred by chemicals which diffuse across the gap.
What are reflexes?
Rapid automatic responses
What is a neurone?
Specialised cells that conduct electrical impulses
Types of receptors?
Smell,sound,taste,touch,pressure,temperature
What is a somatic nerve?
Make up the part of the nerves system we cannot control
What is a autonomic nerve?
Make up the part of the nerves system we can control
What do stimulants do?
Decrease reaction time
What causes type 1 diabetes?
Genetic or infection
What causes type 2 diabetes?
Obesity, too much sugar, over 40
how can type 1 be controlled?
Insulin injections
how can type 2 be controlled
eat less sugar, carb-count or exercise
Where is FSH produced?
In the pituitary gland (FSH)
What does FSH do?
causes egg to mature
What does FSH stimulate?
Stimulates Ovaries to produce oestrogen
Where is oestrogen produced?
Produced in ovaries
What does oestrogen stimulate and inhabit?
Stimulates release of LH and inhabits release of FSH
Where is LH produced?
In pituitary gland (LH)
What does LH stimulate?
release of egg day 14
Where is progesterone produced?
Produced in ovaries (progesterone)
What does progesterone do?
Maintains lining of uterus for 2nd half of cycle
What does progesterone inhabit?
Inhabits LH and FSH
Name some types of contraception
Injection, pill, implant, condom, patch, etc
