Biology Flashcards
What is the cornea (eye)
A clear tough contacting on the front of the eye which refracts (bends) light
What is the iris (eye)
The coloured part of the eye, a muscle. It controls how much light enters the pupil.
What is the lens (eye)
Flexible structures that change shape to focus light onto the retina
What is the Pupil (eye)
Allows light into the eye. Dilates (gets larger) in dim light, constricts (gets smaller) in bright light
What is the retina (eye)
Contains millions of nerve cells which set electrical signals when light strikes them, the receptors are called rods and cones
What is the blind spot in your eye? (Eye)
A point where nerves are missing the fibres. The retina enters the opticnevere here
What is the optic nerve in the eye? (The eye)
It carries impulses from the retina to the brain co-ordinatior
What is a Stimulus (senses)
A change in environment
What is a receptor (senses)
Many different types senses eg, light,sound, touch
What is an coordinator (senses)
Brain or spinal cord
What is an effector (senses)
Muscle or gland
What is a Response (senses)
An action in reaction to a stimulus
What is humour (eye)
Liquid in the eye
What is the nerve in ear? (Ear)
Auditory nerve
How many main layers is the skin made up of? (Touch)
3
What do receptors in the skin do? (Touch)
It has many different receptors that detect pain pressure and temperature
What does the skin contain? (Touch)
Sweat glands, hair, hair follicles, erector muscle and blood vessels
Where is the cerembellum located? (Brain)
In the bottom back of the brain
Where is the medulla located? (Brain)
The straight line in the bottom of the brain
Where is the cerebrum located? (Brain)
The top of the brain
What does the brain do? (Brain)
Controls the functions of the body and behaviour. Different areas carry out different functions.
What does the cerebellum do? (Brain)
Controls movement
What does the medulla do? (Brain)
Controls the unconscious activities such as heart breath and digestion
What do3s the cerebral cortex do? (Brain)
Controls conscious thoughts eg: thihht intelligence memory and language
