Biology B5 Flashcards
What are the components of control systems?
Control systems are made up of coordination centres and effectors.
What connects neurones?
Synapses connect neurones.
How do synapses transmit information?
Synapses transmit information by chemicals.
What is the purpose of reflexes?
Reflexes help prevent injury.
What is the passage of information in a reflex called?
The passage of information in a reflex is called a reflex arc.
What does homeostasis involve?
Homeostasis involves maintaining optimum levels.
What do receptors detect?
Receptors detect stimuli.
What do hormones regulate?
Hormones regulate functions such as metabolism, heart rate, and temperature.
Where do neurones in a reflex arc go through?
Neurones in a reflex arc go through the spinal cord.
What do ovaries produce?
Ovaries produce oestrogen.
What does the thyroid produce?
The thyroid produces thyroxine.
What do testes produce?
Testes produce testosterone.
What is the function of adrenal hormones?
Adrenal hormones prepare the body for action.
What are the characteristics of nerve actions?
Nerve actions are fast, short time, and precise area.
What does insulin do?
Insulin reduces the blood glucose level.
What happens when you eat carbohydrates while exercising?
A lot of glucose is released into the bloodstream.
What is the role of the pancreas in diabetes?
In diabetes, the pancreas may produce insufficient insulin.
What happens to glucose in muscle cells?
Glucose can be stored as glycogen in muscle cells.
What is fertility in women?
Fertility is how easily a woman can get pregnant.
What do hormonal contraceptives do?
They slowly release progesterone.
What are examples of hormonal contraceptives?
Examples include oral contraceptives and contraceptive devices.
What is the function of condoms?
Condoms are the only contraception that protects against STIs.
How long does the menstrual cycle last?
The menstrual cycle lasts around 28 days.
What does LH hormone do?
LH causes ovulation and the maintenance of the uterus lining.
