___________ Selectively Stimulates A₂ Receptors in Brain Neurons Thereby Suppressing

question 35

Multiple Choice

___________ selectively stimulates a₂ receptors in brain neurons thereby suppressing sympathoadrenal activation and lowering blood pressure.

• A)Clonidine
• B)Atropine
• C)Acetylcholine
• D)Bradykinin

---

Definitions:

Chordae Tendineae

Heart strings, or tendinous cords, that connect the papillary muscles to the tricuspid valve and the mitral valve in the heart, preventing inversion.

Venae Cavae

The two large veins (superior and inferior) that return deoxygenated blood from the body to the heart.

Right Atrium

The upper right section of the heart, responsible for taking in blood lacking oxygen from the body and moving it to the right lower chamber.

Left Ventricle

The chamber of the heart that pumps oxygenated blood through the aorta to the rest of the body.