Vocab Flashcards
Proprioceptors
- Receptors found near junction between tendons and muscles
- provide info of where parts of body are
- sense of muscle tension
Chemoreceptor
Detects chemicals responsible for our senses of taste and smell
Mechanoreptors
Sense organs of hearing equilibrium and balance
Golgi tendon organ
- near junction of tendons and muscles
* proprioception (sense of muscle tension)
Meissner corpuscle
- Skin fingertips and lips
- persistent to touch and pressure
Pacini corpuscles
- Subcutaneous,submucous, and around external genitals
- deep pressure and high frequency vibration
Photoreceptor
Stimulated by light
- rods & cones
General sense organs
- Distributed throughout the body
- skin muscles tendons joints and other internal organs of the body
Special sense organs
- Smell taste vision hearing & equilibrium
- nose tongue eyes ears
Layers of the eye
Sclera , choroid, retina
Sclera
Consists tough fibrous tissue
Cornea
Transparent outer layer of sclera
- window of the eye
Iris
Colored muscular part of the eye
Conjunctiva
Mucous membrane that lines the eyelids and covers the sclera in
Lacrimal gland
Glands that produce tears
Choroid
-middle layer of eye that contains a dark pigment to prevent the scattering of incoming light rays
Pupil
The opening in the center of the iris that regulates the amount of light entering the eye
Lens
The refracting mechanism of the eye that is located directly behindhind the pupil
Presbyopia
“Old sightedness”
Cataract
Condition in which the lens loses its transparency and becomes milky in appearance
Retina
Innermost layer of Eyeball
-contains rods and cones
Rods
Receptors for night vision
Cones
Receptors for daytime vision
Fovea centralis
small depression in the Macula lutea where cones are most densely packed