HESI A2 Practice test questions
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Updated 2026
Which of the following is NOT a function of the b) to perform gas exchange
digestive tract?
a) to use enzymes to break down food Gas exchange is a function of the respiratory system
b) to perform gas exchange
c) to remove waste from the body
d) to use peristalsis to move food along
The body, at all times, attempts to maintain a) a process that maintains the stability of the human body's internal
homeostasis. The best definition of homeostasis is: environment in response to changes in internal and external
conditions
a) a process that maintains the stability of the human
body's internal environment in response to changes
in internal and external conditions
b) a function via which the body breaks down glucose
to use as energy
c) a process that maintains the immune
system's defenses
d) a process in which the body resists change
to genetic structure
The endocrine system of the body is responsible for: b) communication through the use of hormones
a) defense through the use of antibodies
b) communication through the use of hormones
c) metabolism through the use of enzymes
d) blood flow through the use of the heart muscle
Anatomical position shows the body in a(n) ________ c) anterior
position.
a) lateral
b) superior
c) anterior
d) posterior
Vitamin K is created in the: c) intestinal tract
a) liver
b) lungs
c) intestinal tract
d) pancreas
, The largest organ in the body is the ________. a) skin
a) skin
b) GI tract
c) femur
d) stomach
A medical scientists wants to study the parenchyma of d)
histologist the kidney. This scientist would correctly be known,
most specifically, as a: Histology is the study of tissues.
a) biologist
b) doctor
c) anatomist
d) histologist
What is Erythropoiesis? a) red blood cell formation
a) red blood cell formation
b) white blood cell formation Blood cell formation is called Hemopoiesis.
c) the destruction of red blood cells Erythro- red blood cells
d) the destruction of white blood cells
In which part of the body is keratin NOT found? d) teeth
a) hair
b) skin Keratin is a family of fibrous structural proteins. Keratin is the key structural
c) nails component of hair, nails, and the outer layer of human skin
d) teeth
What is the relationship between sarcomeres and c) muscle cells contain myofibrils, which in turn are made up of sarcomeres
muscle cells?
a) sarcomeres are muscle cells
b) sarcomeres contain muscle cells
c) muscle cells contain myofibrils, which in turn
are made up of sarcomeres
d) muscle cells contain sarcomeres, which in turn
are made up of myofibrils
A person who has torn their vastus lateralis muscle will b) a cane or crutches
need which of the following?
a) an arm sling The vastus lateralis muscle is a voluntary muscle in the legs. It is part of the
b) a cane or crutches quadriceps.
c) insulin
d) a neck brace
Muscles produce contraction due to the sliding of: a) filaments
a) filaments
b) sarcomeres During muscle contraction, filaments slide together by using energy supplied
c) flexors by ATP.
d) neutrons
The medulla oblongata has what primary responsibility? c) vital functions
a) balance
b) intellect The medulla oblongata is responsible for basic vital functions, including
c) vital functions respiration and heart rate.
d) sensory input