Ear
The circular structure that surrounds the pupil and regulates the amount of light entering the eye.
What is the iris?
Produced by glands
Hormones
Where are adrenal glands found?
above kidneys
What part of the ear converts sound waves into vibrations?
Ear Drum
The opening in which light enters the eye?
Pupil
What sound frequencies are the first to be lost in the aging ear?
High frequencies
How are hormones transported throughout the body?
Circulatory system
Produced by the pineal body, this hormone induces sleep cycle.
melatonin
What gets vibration from the ear drum and passes them to the incus (anvil)?
Stapes (Hammer)
What is the layer of receptor cells at the back of the eye on which an image is focused?
Retina
Name 5 organs or glands of the endocrine system
thyroid glands, hypothalamus, parathyroids, adrenal glands, pineal body, pancreas, liver, pituitary gland
Another name for adrenaline
epinephrine
Hollow structure of the inner ear with coiled tubes filled with fluid. It is where vibrations are changed into nerve impulses.
What is the cochlea?
Receptor cells in the eye that work best in dim light and enable you to see black, white, and grey.
What are rods?
After light passes though the lens where does it go?
The rods/cones/retina.
Regulates and controls activities of all other glands
pituitary gland
Example of a positive feedback loop, and why is it a positive feedback loop?
childbirth; the response escalates the stimulus
Name the inner ear bones in order starting from the tympanic membrane (aka eardrum)
malleus, incus, stapes (hammer, anvil, stirrup)
What is a blindspot?
Area without photoreceptors; where retina and optic nerve meet.
Photoreceptor responsible for color vision
cones
Hormone produced by pancreas.
insulin
Butterfly shaped gland located anterior to trachea and inferior to larynx
thyroid gland