Hearing Impaired Notes
Sensory hair cells are located on the basilar membrane of the scala media.
Inner hair cells: form one row that runs the length of the basilar
membrane. Each is innervated by 1020 sensory neurons.
Outer hair cells: arranged in rows.
Lecture 1 Notes
Specialized epithelial cells
Cells behave like neurons by depolarizing and producing action potentials.
Cells release neurotransmitters onto sensory neurons.
Microvilli come into contact with chemicals.
Each taste bud has taste cells sensi
Lecture 3 Notes
Provides a sense of equilibrium
Located in the inner ear
Utricle and saccule
Consists of a bony labyrinth surrounding a membranous labyrinth
Within the membranous labyrinth is fluid called end
Lecture 5 Notes
When a persons body is spinning, eye movements are toward the opposite
direction of the spin to maintain a fixation point.
When the body comes to a stop, the cupula is bent by fluid inertia and eye
movements are still affected.
The jerky e
Lecture 7 Notes
Allow black-and-white vision in low light
Contain the pigment rhodopsin, which absorbs green light best
Absorption causes rhodopsin to dissociate into retinaldehyde and opsin.
Retinaldehyde (also called retinal) is derived from vitamin A.
Lecture 9 Notes
Neurons from the thalamus synapse on the striate cortex of the occipital lobe.
2030% of the ganglion cell axons synapse on the superior colliculus of the
midbrain, which helps with eye and body movements.
Produced by contraction of extrins
Vascular Arteries Notes
Increased water intake and decreased urine formation increase blood
Blood becomes dilute, and ADH is no longer released.
Stretch receptors in left atrium, carotid sinus, and aortic arch also inhibit ADH release
The sum of a
Chapter 14 Notes
Net filtration pressure is the hydrostatic pressure of the blood in the capillaries
minus the hydrostatic pressure of the fluid outside the capillaries:
=36 mmHg at arteriole end
=16 mmHg at venule end
Colloid osmotic pressure: due to pro
Essential Hypertension Notes
Activated by increased venous return to:
Inhibit ADH release
Stimulate secretion of atrial natriuretic peptide
Results in excretion of more urine
Results in excretion of more salts and water in urine
Eye Retina Notes
Light passes through the cornea and into the anterior chamber of the eye.
Next, it passes through the pupil, which can change shape to allow more or less
Then it passes through the lens, which can change shape to focus the image