HESI A&P Practice Questions and Answers
with solutions 2025/2026
What vein returns blood to the heart, draining the head, neck, and
upper torso? - ANSWER Superior Vena Cava
In order for the actin filaments to bind to the myosin head, what must
occur first? - ANSWER Calcium ions must bind to troponin molecules
What valve is responsible for preventing the back flow of blood from the
right ventricle to the right atrium? - ANSWER Tricuspid valve
Which two bones make up the structure of the lower leg? - ANSWER
Fibula and Tibia
The opening in the skull that is superior to the atlas is known as the
_____________. - ANSWER Foramen Magnum
What section of the human spine contains five vertebrae? - ANSWER
Lumbar
What lobe of the brain is responsible for processing olfactory
information? - ANSWER Temporal
, What type of cellular connection is characterized by openings in
adjacent animal cells for intercellular exchange to take place? - ANSWER
Gap Junctions
What is the main function of calcitonin? - ANSWER Decreasing the
calcium concentration in the blood
What type of joint is present in the elbow? - ANSWER Hinge joint
A rupture in the cardiac sphincter would result in what occurring? -
ANSWER The back flow of gastric juices into the esophagus
The engulfing of large particles into the cell is referred to as
_____________. - ANSWER Phagocytosis
What enzyme begins the process of carbohydrate digestion in the
mouth? - ANSWER Amylase
Fats are broken down in the small intestine using which enzymes? -
ANSWER Lipase and Bile
Electrical impulses called "action potentials" move along the axon of a
neuron by _________. - ANSWER Saltatory conduction
with solutions 2025/2026
What vein returns blood to the heart, draining the head, neck, and
upper torso? - ANSWER Superior Vena Cava
In order for the actin filaments to bind to the myosin head, what must
occur first? - ANSWER Calcium ions must bind to troponin molecules
What valve is responsible for preventing the back flow of blood from the
right ventricle to the right atrium? - ANSWER Tricuspid valve
Which two bones make up the structure of the lower leg? - ANSWER
Fibula and Tibia
The opening in the skull that is superior to the atlas is known as the
_____________. - ANSWER Foramen Magnum
What section of the human spine contains five vertebrae? - ANSWER
Lumbar
What lobe of the brain is responsible for processing olfactory
information? - ANSWER Temporal
, What type of cellular connection is characterized by openings in
adjacent animal cells for intercellular exchange to take place? - ANSWER
Gap Junctions
What is the main function of calcitonin? - ANSWER Decreasing the
calcium concentration in the blood
What type of joint is present in the elbow? - ANSWER Hinge joint
A rupture in the cardiac sphincter would result in what occurring? -
ANSWER The back flow of gastric juices into the esophagus
The engulfing of large particles into the cell is referred to as
_____________. - ANSWER Phagocytosis
What enzyme begins the process of carbohydrate digestion in the
mouth? - ANSWER Amylase
Fats are broken down in the small intestine using which enzymes? -
ANSWER Lipase and Bile
Electrical impulses called "action potentials" move along the axon of a
neuron by _________. - ANSWER Saltatory conduction
