Flashcards in Option A: A.3 Perception of stimuli Deck (44):
stimulated by a mechanical force or some type of pressure.
sense of touch caused by these that are sensitive to pressure. They can detect a change in blood pressure in our arteries.
repsond to the degree of lung inflation in the lungs
found in muscle fingers, tendons, joints and ligaments that tell the position of our arms and legs. Help us to maintain posture and balance
respond to chemical substances, we can taste and smell using this type of receptor. Give us information about our internal body environment. Pain receptors are a type of chemoreceptor that respond to chemicals released by damaged tissues.
respond to smell
a cluster of nerve endings, spores, or small blood vessels, especially a cluster of capillaries around the end of a kidney tubule.
respond to change in temperature. warmth receptors respond when the temperature rises, cold when temp drops. They are located in the skin
respond to light energy, found in the eyes. Our eyes are sensitive to light and give us vision. Rod cells in our eyes respond to dim light (black and white vision); cone cells respond to bright light (colour vision)
a change in external or internal environment that is detected by a receptor and elicits a response
a change in behaviour in reaction to a stimulus
a rapid and unconscious response
tough, protective outer layer of eye
muscular portion of iris in eye
outer layer of the pupil focusing begins here
the hole, entry of light to the eye
adjustable focus of light of the eye
the outer layer of the sclera, protective and mucus secretion. keeps the eye moist.
pigmented, controls opening and closing of pupil, regulating entry of light
protection, opening, cleaning of eye
transparent jelly in the eye
contains receptors for vision (rod cells) in the eye
layer of light-absorbing pigment of the eye
an area of densely packed cone cells were vision is most acute in the eye
carries nerve impulses to the occipital lobe (transmits impulses to brain)
no receptor cells in eye
photoreceptor cells that are very sensitive to light. They receive the stimulus of light, even very dim light, and synapse with a bipolar neuron. (black and white vision)
photoreceptor cells that are activated by bright light. They receive the stimulus of bright light and synapse with a bipolar neuron. (colour vision)
cells in the retina that carry impulses from a rod or a cone cell to a ganglion cell of the optic nerve. They are called bipolar because they each have two processes extending from the cell body.
they synapse with the bipolar neurons and send the impulses to the brain via the optic nerve.
three classes of cone cells: red, green and blue. Dichromatic have red-green vision defects.
a small stirrup-shaped bone in the middle ear, transmitting vibrations from the incus to the inner ear. strikes the oval window.
bones of middle ear vibrations
the malleus, incus and stapes receive vibrations from the tympanic membrane and multiple them x20
a membrane forming part of the organ of hearing, which vibrates in response to sound waves. Forms the eardrum
stick out of the hair cells and detect sounds of a specific wavelength. As it bends back and forth on the hair cells, an internal change in the hair cell itself is created. This change produces an electrical impulse that is carried to the auditory nerve.
vibrated by air pressure changes due to sound waves
middle ear bones
stimulated by ear drum, knocks against each other and magnify sound (around 20x)
balance (not hearing) in ear
transmits vibrations from middle ear bones
tiny hairs respond to individual wavelengths of sound, generating AP in ear
transmit nerve impulse from cochlea to brain in ear
dissipates vibrations (dampens "used" sound stimulus) in ear