The Sensory System (part 1)
Influences visual acuity by refracting light
What is the cornea?
What is the cerebellum?
Strongest, thickest layer of the heart.
What is the myocardium?
Heart sound produced by the closure of the AV valves when the ventricles contract.
What is the first heart sound (S1)?
Cause of visible black and blue marks that result from traumatic injuries.
What are ruptured capillaries containing cellular waste products?
Nerve responsible for carrying sensation of eye pain.
What is the trigeminal nerve?
Focuses the light rays on the retina.
What is the eye's lens?
Thinnest layer of the cardiac blood vessel.
What is the tunica intima?
Heart sound that results from the closure of the aortic and pulmonary semilunar valves when the ventricles relax.
What is the second heart sound (S2)?
Carry oxygenated blood to the body cells.
What are arteries?
Constricts and dilates the pupil.
What is the oculomotor nerve?
Maintains intraocular pressure.
What is aqueous humor?
Layer of the vein containing the thickest elastic fibers, as well as connective tissue.
What is tunica media?
The amount of blood pumped by the ventricles in 1 minute.
What is Cardiac Output?
Presbyopia is an effect of this.
What is aging?
Cannot bring horizontal and vertical lines into focus at the same time.
What is astigmatism?
Equalizes the pressure in the middle ear with atmospheric pressure.
What is the Eustachian tube?
Keep blood flow moving in one direction only.
What are the cardiac valves?
Internal process that attempts to maintain blood pressure within normal limits.
What is stimulation of the baroreceptors?
Amount of pressure the ventricles must overcome to empty their contents.
What is afterload?
Protect the vital internal organs of the middle and inner ear from injury.
What are the ossicles?
A feeling of dizziness and the room spinning.
What is vertigo?
The normal pacemaker of the heart.
What is the SA (sinoatrial) node?
What the volume of blood ejected with each heartbeat depends on.
What are the preload and the afterload factors?
The amount of pressure against the ventricular wall at the end of diastole.
What is preload?