Nervous System #1
The basic structural unity of the nervous system
neuron
What is the function of retina?
Contain light sensitive cell (rods and cones)
part of the organism that receives impulses
receptors
what is baroreceptor?
Detect the blood pressure
What are 3 main layer of ear?
Outer ear, middle ear, inner ear
What is the function skull or cranium?
protects the brain
What is the function of cones?
Detect the light
the brain weighs about _________
1.4 kg
What is mechanoreceptor?
Detect mechanical signals
Name of 3 small bones in our ear.
Hammer (malleus), anvil (incus), Stirrup (stapes)
what is the quick automatic response to a stimulus
reflex action?
Carries messages from the retina to the brain. What it is?
Optical nerve
What is sense organ?
organ which are contain receptors
Thermoreceptor
Detect body tempreture
Carries messages from the cochlea to the brain. which part is it?
Auditory nerves
what are changes in the environment?
stimuli
Which special cell turn the light into electrical signals?
Photoreceptors
control sense organs ____________
cerebrum
which receptor detect low intensity light
Photoreceptor
what is the function of eardrum?
Catch the vibrations
three types of neurones
sensory, motor and relay neurone
Colored circle around the pupil. It controls the size of the pupil. What it is?
Iris
protected by the vertebral column
spinal cord
Which receptor detect solute concentration of body?
Osmoreceptor
Which part of brain (lobe) are responsible for hearing?
Temporal lobe