Receptors

Question 1

Alpha (a) - 1

(Agonist Effect)

Answer 1

Vasoconstriction of arteries and veins

Question 2

Alpha (a) - 2

(Agonist Effect)

Answer 2

• Insulin restriction
• Glucagon secretion
• Inhibition of Norepinephrine release

Question 3

Beta (b) - 1

(Agonist Effect)

Answer 3

• Increased Heart Rate (Chronotropic Effect)
• Increased Myocardial Contractility (Inotropic Effect)
• Increased Myocardial Conduction (Dromotropic Effect)
• Renin secretion for urinary retention

Question 4

Beta (B) - 2

(Agonist Effect)

Answer 4

• Bronchus and Bronchiole relaxation
• Insulin secretion
• Uterine relaxation
• Arterial dilation in certain key organs

Question 5

Dopaminergic

(Agonist Effect)

Answer 5

• Vasodilation of RENAL AND MESENTERIC arteries

Question 6

Nicotinic

(Agonist Effect)

Answer 6

• Present at neuromuscular junction, allowing ACh to stimulate muscle contraction

Question 7

Muscarinic - 2

(Agonist Effect)

Answer 7

• Present in the heart; activated by ACh to offset stimulation of the Sympathetic Nervous System
  
  • Decreasing heart rate, contractility, and electrical conduction velocity

Question 8

Opioid

(Agonist Effect)

Answer 8

• Present in central and peripheral nervous system, bowels, and various tissues, activated by opioid substances to produce analgesia, euphoria, repiratory depression, and numerous other clinical effects.
• Three types:
  
  • Mu
    
    • Most prominent
    • Greatest affinity for both Morphine and Nalaxone (opioid antagonist)
  • Kappa
  • Delta