22. Ventricular Contractility increases in response to circulating Epinephrine. What factor is responsible for this increase in the force of the contraction? A.the Na+ current (depol.) B.the Ca++ current which causes the plateau (trigger Ca++) C.the K+ current D.a decreased Central Venous Pressure 23. Normally, Systole takes up about 80% of the Cardiac Cycle. A. true B. false 24.Which of the following is not an affect of circulating Angiostensin II (AII)? A.thirst B.selective vasodilation C.increased peripheral vascular tone & resistance D.the release of Aldosterone from the adrenal cortex 25. Blood Volume affects blood pressure because it directly increases: A.Total Peripheral Resistance B.Stroke Volume C.End Systolic Volume D.Central Venous Pressure 26. Atrial Naturetic Factor is released to adjust blood pressure. Which organ releases this hormone? A.the heart B.the kidneys C.the adrenal cortex
Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
22. Ventricular Contractility increases in response to circulating Epinephrine. What factor is responsible for this increase in the force of the contraction?
A.the Na+ current (depol.)
B.the Ca++ current which causes the plateau (trigger Ca++)
C.the K+ current
D.a decreased Central Venous Pressure
23. Normally, Systole takes up about 80% of the Cardiac Cycle.
A. true B. false
24.Which of the following is not an affect of circulating Angiostensin II (AII)?
A.thirst
B.selective vasodilation
C.increased peripheral vascular tone & resistance
D.the release of Aldosterone from the adrenal cortex
25. Blood Volume affects blood pressure because it directly increases:
A.Total Peripheral Resistance
B.Stroke Volume
C.End Systolic Volume
D.Central Venous Pressure
26. Atrial Naturetic Factor is released to adjust blood pressure. Which organ releases this hormone?
A.the heart
B.the kidneys
C.the adrenal cortex
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