Coordination & Control AND Neurones Flashcards
What is stimuli?
Change in environment
What are the two systems that respond to changes?
Nervous system and Endocrine System
What are the two parts of the nervous system?
CNS and PNS
What does the CNS consist of
The brain and the spinal cord
What is the PNS divided into?
The autonomic nervous system and the somatic nervous system
Name the parts of the brain
Cerebrum, Hypothalamus, Pituitary gland, Cerebellum, Medulla Oblongata
What does the cerebrum do?
Controls conscious thoughts, coordination of voluntary actions, speech
What does the hypothalamus do?
Body temperature, sleep, hunger and thirst, reproduction of hormones from the pituitary gland
What does the Pituitary gland
Releases ADH, Secretes hormones to control growth, metabolism and activity of the testes and ovaries
What does the cerebellum do
Receives information from balance receptors in the ear, coordination of balance, posture and movement
What does Medulla Oblongata
Controls many involuntary actions like heart rate, peristalsis
What are neurones
These are high specialised cells that show the properties of irritability and conductivity.
What are the different types of neurones and their function
Sensory neurones : > Conduct electrical impulses from sensory cells, such as receptor cells in the eye.
Motor Neurons conduct electrical impulses from the central nervous system to effectors.
Relay Neurons are only found in the CNS. They transmit information between sensory and motor neurones.
What is a synapses
A synapses is found between neurones and between motor neurones and effectors. They allow impulses to travel in only one direction.
What are Voluntary and Involuntary actions
Voluntary actions are actions we do on command like talking, singing, walking, beating up someone
Involuntary actions are actions we do without thinking about it like blinking, breathing, and the beating of our heart
