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growth hormone
pituitary gland
adrenal gland
adrenalin
thyroid
thyroxin
pancreas
insulin
homeostasis
maintenance of relatively constant environments in the body
testes
testosterone
ovaries
oestrogen
central nervous system
the spinal cord and brain, has nerves running up and down it.
peripheral nervous system
the nerves branching off from the cns, all over the body
stimulus
detectable change (physical or chemical) in the environment of an organism that results in some functional activity
receptor
a cell or group of cells that receives stimuli : sense organ
effector
muscles and glands - that produce a specific response to a detected stimulus
negative feedback
when the product of a reaction leads to a decrease in that reaction
How does the human body respond to the ‘cold’?
it constricts the blood vessels, causing goosebumps, and, it causes shivering, both of these increase body heat.
What are the parts of a typical neuron?
There are dendrites, axon, and a cellbody.
synapse
space between two neurons
neurotransmitters
help to transmit signals between synapses
hypothalmus
chooses when to release hormones
Why is the pituitary called the ‘master gland’?
The pituitary gland regulates growth, reproduction, and metabolism
What is a ‘flight or flight’ reaction
the reaction that happens when a human is in direct immediate danger
What is a reflex arc?
a diagram used to show the reaction of the body
cerebellum
controls muscle control, keeps us standing.
cerebrum
initiates and coordinates movement, enable speech, judgment, thinking and reasoning, problem-solving, emotions and learning.
brainstem
sends signals from your brain to the rest of your body.
Note
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