Adrenergic synapses containing alpha receptors are primarily responsible for which function?
1. Release of intracellular calcium
2. Inhibiting vasoconstriction of the bronchioles
3. Constriction of arterioles in the kidneys
4. Increasing the strength of contraction in the coronary arteries
Correct Answer: 1
Rationale 1: Release of intracellular calcium is an alpha response.
Rationale 2: Alpha receptors are responsible for the release of intracellular calcium stores and inhibitory actions.
Rationale 3: Constriction of arterioles in the kidneys relates to dopamine receptors.
Rationale 4: Increasing the strength of contraction in the coronary arteries is a beta response.
Global Rationale: Release of intracellular calcium is an alpha response. Alpha receptors are responsible for the release of intracellular calcium stores and inhibitory actions. Constriction of arterioles in the kidneys relates to dopamine receptors. Increasing the strength of contraction in the coronary arteries is a beta response.
You might also like to view...
The older person's ability to remember, dream, and exercise behavioral control is a factor most related to:
1. biologic age. 2. psychological age. 3. social age. 4. chronological age.
As a nurse working in the newborn nursery, you notice an infant who is having circumoral cyanosis. Which CHD do you suspect the child may have? Select all that apply
a. Patent ductus arteriosus (PDA) b. Tetralogy of Fallot c. Pulmonary atresia d. Transposition of the great arteries e. Ventricular septal defect
The nurse explains that a serious complication of a patient's chronic obstructive pulmonary disease (COPD) is cor pulmonale, which is exhibited by:
a. distended neck veins. b. weight loss. c. confusion and disorientation. d. excessive coughing.
Although the skeleton determines the size of the body's framework, muscle and fat determine body shape. The student nurse is preparing a chart on the various types of muscles
Based on this information, what should be included about skeletal muscles? A) Responsible for facial expression and posture under involuntary control B) Responsible for locomotion under voluntary control C) Responsible for motion inside body organs and structures under involuntary control D) Responsible for propelling blood through blood vessels under voluntary control