Biology (feb mocks) Flashcards
Where is Insulin produced?
The pancreas
What does Insulin do?
Bind to cells to absorb glucose into glycogen when glucose levels are too high
What is glycogen?
A stored form of glucose
In what type of people is type 2 diabetes common?
older people, people with long-term unhealthy diets
what causes type 2 diabetes?
cells become resistant to insulin and don’t take enough glucose from bloodstream
What is the treatment for type 2 diabetes?
a healthy low sugar diet and exercise
What is metabolism?
the sum of all chemical reactions that take place in the body
What does the thyroid gland produce? do?
thyroxine
What is the negative feedback system for thyroid levels?
when thyroxine levels are low, the pirtuitary gland releases TSH which triggers the thyroid gland to produc thyroxine into the blood. when increased levels are detected, TSH production is stopped and levels fall.
What does thyroxine do?
Thyroxine stimulates metabolic rate and controls the speed at which oxygen and food products react to release energy for the body to use
How do you calculate BMI?
Weight/height^2
What is stage one in the menstrual called? How long does it last?
Menstruation - days 1-4
What happens in stage one of the menstrual cycle? How long does it last?
Uterus lining is broken down, bleeding
What is stage two in the menstrual called? How long does it last?
Proliferative phase - days 4-13
What happens in stage two of the menstrual cycle? How long does it last?
Uterus lining builds back up again to prepare for fertilised egg
