the brain and the eye Flashcards
1
Q
what is in the central nervous system
A
the brain and spinal cord
2
Q
name the different regions in the brain
A
- cerebral cortex
- cerebellum
- medula oblongata
- hypothalamus
3
Q
what is the cerebral cortex
A
- outer layer of the brain
- divided into two hemispheres (left and right)
- that control high order processes: memory, consciousness, personality and intelligence
4
Q
what is the cerebellum
A
- under the cerebral cortex
- balance, muscle coordination, movement
5
Q
what is the medulla oblongata
A
- unconscious activities
- heart rate and breathing
6
Q
what is the hypothalamus
A
regulates temperature and water balance
7
Q
what are two types of receptor cells in the eye
A
- rods
- cones
8
Q
what is a rod
A
a receptor cell sensitive to light
9
Q
what is a cone
A
a receptor cell that detects colour
10
Q
what does refract mean
A
bend
11
Q
what is the cornea
A
a transparent lens that refracts light as it enters the eye
12
Q
what is the iris
A
controls how much light enters the pupil
13
Q
what is the retina
A
contains rods and cones
14
Q
what is the pupil
A
a hole that allows light to enter the eye
15
Q
what is the optic nerve
A
a sensory neuron that carries impulses between the brain and the eye
