Co-ordination and control Flashcards
(25 cards)
You need to know what’s going on in the environment you’re in, how does your body do this.
it uses your nervous system
Your nervous system carries what?
impulses/electric signals
Changes are known as what?
Stimuli
What are the stimuli picked up by?
cells called receptors
Receptor cells are often clustered where?
sense organs
Impulses/electrical signals are usually sent along what special cells?
Neurons
Neurons clustered together are known as
nerves
What does CNS stand for
Central nervous system
What is the central nervous system made of? (CNS)
The brain and the spinal cord
What cells carry the impulse/electric signal from the CNS to the rest of the body?
Motor Neuron
Muscle or glands which respond to the arrival of impulses.
Effector Organs
Order of travel
Receptor –> Sensory Neuron –> Co-oridnator(CNS) –> motor Neuron –> effector (effector organs)
Junctions between nerves are called
synapses
Automatic reactions are known as
reflexes
if you need to avoid danger or harm very quickly that would be use
reflexes
What is the order for a reflex?
Receptor -> Sensory Neuron -> motor Neuron -> relay neuron -> motor neuron -> effector
What is the neuron in the spinal cord called?
relay neuron
Chemicals are released between two nerves, these chemicals are able to pass the electrical impulse, what is this an example of?
the Synapse
FSH is short for…
Follicle Stimulation Hormone
FSH is secreted (produced) where?
Pituitary gland
What is the female sex hormone called?
Oestrogen
FSH stimulates what?
The ovaries to produce oestrogen
What is secreted in the ovaries and and stimulates the lining in the womb, it also inhibits (slwos down) production of FSH?
Oestrogen
what hormone stimulates the the release of a mature egg
LH
