Practice Exam/ Updated 2025.
Which of the following will occur when the parasympathetic nervous system is
activated?
A. digestion increases
B. pupils dilate
C. bladder relaxation
D. heart rate increases - CORRECT ANSWER-A. digestion increases
Parasympathetic - rest and digest
Which of the following electrolytes is released from the sarcoplasmic reticulum during
muscle contraction?
A. calcium
B. sodium
C. potassium
D. chloride - CORRECT ANSWER-A. calcium
calcium causes the troponin-tropomyosin complex to shift and cause muscle
contractions
Which of the following enzymes found in pancreatic juice functions to digest proteins?
A. lactase
B. amylase
C. trypsin
D. pepsin - CORRECT ANSWER-C. trypsin
Amylase - digest cards
Pepsin - also digests protein, but in the stomach
Trypsin - digests proteins, made in pancreas
A mutation in which of the following proteins would directly impact the muscular
system?
A. albumin
B. hemoglobin
C. actin
D. fibrinogen - CORRECT ANSWER-C. actin
Where are epinephrine and norepinephrine produced?
A. hypothalamus
B. adrenal cortex
C. adrenal medulla
D. anterior pituitary - CORRECT ANSWER-C. adrenal medulla
MEN = stress
(medulla, epinephrine, norepinephrine)
, Which part of the heart is inflamed in a patient diagnosed with endocarditis?
A. muscle layer of heart
B. heart valves
C. membrane sac around heart
D. serous pericardium - CORRECT ANSWER-B. heart valves
Endocarditis is the inflammation of the endocardium which would include the heart
valves, pericarditis would affect sac around
Which of the following sheaths of connective tissue surrounds a fascicle in skeletal
muscle?
A. endomysium
B. perimysium
C. myofibril
D. epimysium - CORRECT ANSWER-B. perimysium
Epimysium surrounds the whole muscle and endomysium surrounds the muscle fiber
Which of the following muscle types is described as striated and under involuntary
control?
A. cardiac muscle
B. smooth muscle
C. skeletal muscle
D. gluteus maximus - CORRECT ANSWER-A. cardiac muscle
You don't have to tell your heart to beat
The corpus callosum is associated with which part of the brain?
A. cerebellum
B. pons
C. cerebrum
D. midbrain - CORRECT ANSWER-C. cerebrum
The corpus callosum connects the two cerebral hemispheres
Which of the following describes the volume of air moved into or out of the lungs during
a single respiratory cycle?
A. tidal volume
B. lung capacity
C. vital capacity
D. minimal volume - CORRECT ANSWER-A. tidal volume
Which of the following is the most superficial layer of the epidermis?
A. stratum basale
B. stratum spinosum
C. stratum lucidum
D. stratum corneum - CORRECT ANSWER-D. stratum corneum
Come lets go sun bathing