Homeostasis And Response Flashcards
Why is no protein found in the urine ?
Too big.
Cannot pass through filter and stays in blood.
One way scientists have studied the brain ?
Studying patients with brain damage.
Electrically stimulating different parts of the brain.
What kind of organ is the eye ?
A sense organ.
When an object is near ?
Ciliary muscles contract.
Suspensory ligaments relax.
Lens is short and fat.
When an object is far ?
Ciliary muscles relax.
Suspensory ligaments taughten.
Lens is flat.
In dim light ?
Radial muscles (inner) contract.
Circular muscles relax.
Dilated pupil so more light can enter.
In bright light ?
Radial muscles (inner) relax.
Circular muscles contract.
Constricted pupil letting less light in.
What is the function of the sclera ?
Protects the eye – tough.
What is the function of the cornea ?
Refracts the light as it enters the eye.
What is myopia ?
Short sightedness
What is hyperopia ?
Long sightedness
Where is the pituitary gland found ?
At the base of the brain.
Where is the thyroid found ?
At the base of the neck.
What does the thyroid release ?
Thyroxine - regulates metabolism.
Where is the adrenal gland located ?
One on top of each kidney.
