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AP Lab
Sensory Organs
18
Anatomy
Undergraduate 1
10/28/2009

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Cards

Term
General Senses
Definition
simple neural pathways (touch, pain, temperature, proprioception, chemical/pressure detection)
Term
Special Senses
Definition
complex neural pathways with receptors housed in specialized organs (gustation, olfaction, vision, audition, equilibrium)
Term
Referred Pain
Definition
when the part of the body where the pain is felt is different from the part of the body where the painful stimulus is applied
Term
Tonic Receptors
Definition
always active (ex: pain receptors
Term
Phasic Receptors
Definition
usually inactive, turned on with stimulation (provides information on the rate of change of a stimulus)
Term
Location of the Olfactory Receptors
Definition
the olfactory epithelium lining the roof of the nasal cavity
Term
Olfactory Adaptation
Definition
when the olfactory nerves adapt to a repeated stimulus
Term
Photoreceptors
Definition
receptors of the retina
Term
Rods
Definition
sensitve to low illumination and motion; insensitive to most colors of light
Term
Cones
Definition
stimulated by moderate or bright light and reponds to different wavelengths, or colors, of light (visual acuity)
Term
Optic Disc
Definition
where the optic nerves exit the eyeball ("blind spot")
Term
Vertigo
Definition
motion sickness occurring when the CNS receives conflicting sensory information from the inner ear, eyes, and other receptors
Term
Endocrine System
Definition
maintains long term control by secreting hormores with long lasting effects
Term
What hormone is secreted by the Thymus?
Definition
Thymosins
Term
What hormone is secreted by the Pineal gland?
Definition
Melatonin
Term
What hormone is secreted by the Parathyroid glands?
Definition
Parathyroid hormone (PTH)
Term
Pituitary gland
Definition
"master gland;" hypophysis
Term
Lobes of the Pituitary Gland
Definition
adenohypophysis (anterior lobe), neurohypophysis (pars nervosa; posterior lobe)
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