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
Hwo are some people long sighted? (Eye)
Eyeball too short or lens too weak
How are some people short sighted?
Eyeball is too long or lens too strong.
What are receptors in the eye sensitive to? (Eye)
They are sensitive to light
What are receptors in the ear sensitive to?
They are sensitive to sounds
What are receptors a kind of?
Cells
What does the nervous system do?
Allows humans to coordinate their behaviour and enable them to to react the their surrounding
Which senses are sensitive to chemicals?
Tongue and nose
Where does information from receptors go to?
Information from receptors passes along nerves to the brain.
What is another word for ear drum? (Ear)
Tympanic membrane
What is the tube in ear called? (Ear)
Eustachian tube
What is an independent variable?
The variable you change
What is the dependent variable?
The one your measure/ record
What is the control variable? (Ear)
The one you keep the same
What are the 3 bones in the ear? (Ear)
Hammer anvil and stir up
What is the outer ear called? (Ear)
The pinna
What is the canal in the ear called? (Ear)
The ear canal
Which part of the ear vibrates when sound is made? (Ear)
The ear drum
What is the circular part in the back of the ear callled? (Ear)
The cohlea
What are the canals in the ear called? (Ear)
The semicircular canals
