A & P Test Review 2
Medium-difficulty multiple-choice review covering key anatomy and physiology concepts from the provided material.
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Quiz Questions & Answers
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Question 1: The growth plate involved in a proximal humeral fracture in a 2-year-old is also called the:
Epiphyseal plate
Diaphyseal cortex
Periosteum
Metaphyseal line
Question 2: Which structure forms a complete ring and keeps the trachea open?
Thyroid cartilage
Cricoid cartilage
Epiglottic cartilage
Arytenoid cartilage
Question 3: Automaticity in the heart is best defined as the ability to:
Generate its own electrical impulses
Contract more forcefully when stretched
Conduct impulses faster through the AV node
Respond to parasympathetic stimulation
Question 4: Which nerve fiber type releases norepinephrine at the synapse?
Sensory afferent fibers
Somatic motor fibers
Cholinergic fibers
Adrenergic fibers
Question 5: Which valve's dysfunction would cause blood to backflow into the left atrium?
Aortic valve
Pulmonic valve
Mitral valve
Tricuspid valve
Question 6: Surfactant in the lungs serves to:
Increase pulmonary vascular resistance
Produce mucus to trap particles
Transport oxygen across the alveolar membrane
Reduce surface tension to prevent alveolar collapse
Question 7: Which structure is the heart's primary pacemaker located in the right atrium?
Sinoatrial (SA) node
Atrioventricular (AV) node
Purkinje fibers
Bundle of His
Question 8: Which of the following best describes afterload?
The maximal stretch of cardiac muscle before contraction
The volume of blood returned to the heart each minute
The interval between atrial and ventricular depolarization
The resistance the left ventricle must overcome to eject blood