ATI LPN
PN Learning System Medical Surgical Endocrine Practice Quiz Questions
Question 1 of 5
Adonis arrives at the gym and spots a dumbbell he wants to use. When attempting to lift the weight, his biceps brachii contract, but the weight is not moved because it is too heavy. This is called?
Correct Answer: A
Rationale: Isometric contraction: muscle tenses without shortening, as load exceeds force.
Question 2 of 5
All are responses to hemorrhaging except:
Correct Answer: D
Rationale: Hemorrhage reduces hydrostatic pressure; others compensate for blood loss.
Question 3 of 5
A sensitized B cell is activated once:
Correct Answer: A
Rationale: Helper T cells release cytokines to activate B cells for antibody production.
Question 4 of 5
Identify and calculate the following volumes and capacities: Expiratory Reserve Volume
Correct Answer: C
Rationale: ERV is 1000 mL, extra air exhaled beyond TV.
Question 5 of 5
The is the endometrial layer that remains essentially unchanged during the menstrual cycle.
Correct Answer: C
Rationale: Basal layer persists, regenerating functional layer each cycle.