HEENT A&P test remediation Flashcards
4 conditions for sensation
- stimulus
- receptor converts stimulus into electrical signal
- nerve pathway conducts info to brain
- brain translates or integrates the nerve impulse into sensation
Which layer of the skin is warm receptors located?
Dermis
Which layer of the skin is cold receptors located?
Epidermis
Muscle spindles are located where?
Skeletal muscles
Tendon organs are located where?
Tendons
Olfactory epithelium contains which 3 cells?
Olfactory receptor cells, supporting cells and basal cells
Where does the olfactory tract project for the awareness of smell?
Cerebral cortex
Where does the olfactory tract project emotional response to odor?
Limbic System
How does taste get to the brain?
Taste buds->cranial nerves->midbrain-> primary guastatory area (parietal lobe of cerebral cortex)
How does sight get to the brain?
Formation of an image on the retina->stimulation of photoreceptors->visual pathway to the brain
What nourishes the lens and cornea?
Aqueous humor in Anterior cavity
What holds the eye’s shape and holds the retina in place?
Vitreous body in the Vitreous Cavity
Where in the brain is sight perceived?
Primary visual areas of the occipital lobe
The membranous labyrinth is the same general shape as what?
Bony Labyrinth
The membranous labyrinth contains what?
Vestibule
What are the receptor organs for equilibrium?
- Saccule
- Utricle
- Semicircular ducts
