B2 - Brain And Eye Flashcards
What part of the brain controls our senses and emotions?
Cerebral cortex
State one thing that the cerebellum controls.
balance, posture or fine motor movements
The medulla oblongata is responsible for:
Regulates heart rate, breathing rate and blood pressure
The hypothalamus is responsible for:
Thermoregulation
What type of cells is the brain mainly made up of?
Neurones
What name is given to an electrical signal transmitted by a neurone?
Impulse
What is the name of the main endocrine gland in the brain?
Pituitary
Which neurone is located in the central nervous system?
Relay
Which cerebral hemisphere receives information from the right eye?
Left
a PET scan shows…
Brain activity
Which part of the eye sends electrical signals to the brain?
Optic nerve
Which part of the eye controls the amount of light entering the eye?
Iris
Which part of the eye allows light to enter the eye?
Pupil
Which part of the eye focuses light onto the retina?
Lens
Which part of the eye detects light and colour?
Retina
What controls the lens thickness for focusing?
Ciliary Muscles
Which of the following is true for long-sightedness?
The focal point is behind the retina
Which receptors are more responsive in dim light?
Rods
Why does the lens need to become fatter to focus on closer objects?
To refract the light rays more
What type of eye problem is caused by protein build up inside the lens?
Cataracts
