HESI A2 Anatomy & Physiology Test
(25 Questions)
Verified Q&As with Explanations
LATEST QUESTIONS
, 1. 1. Question
Which of the following anatomical terms is correctly matched with its meaning?
cranial/skull
carpal/foot
inguinal/neck
cervical/wrist
Answer: cranial/skull
Cranial refers to the bone comprising the skull.
Carpal refers to the bone comprising the wrist.
Cervical refers to the region of vertebrae in the neck.
Inguinal is the superior region of the thigh.
, 2. 2. Question
Which part of the eye allows us to see color?
Aqueous humor
Iris
Pupil
, Retina
Answer: Retina
The retina is a thin layer of tissue that lines the back of the inside of the eye, near the optic
nerve. The purpose of the retina is to receive light that the lens has focused, convert the light
into neural signals, and send those signals to the brain for visual recognition. There are two
types of photoreceptor cells found in the retina: rods and cones.
o Rod cells can function in low levels of light but do not pick up on colors. This is
why things we see can see at night but things tend to look more grey and fuzzy.
Rods also help with our peripheral vision, as they are concentrated on the outer
edges of the retina.
o Cone cells need more intense light to function and are the receptors that allow
us to see colors. Most cone cells are found in the fovea, at the back of the retina.
The fovea helps us see details in objects we are looking at. The human eye
contains three different types of cone cells: blue, red, and green. The different
types of colorblindness arise from one, two, or all three types of cone cells not
working properly (or not working at all).
The iris is the pigmented (colored) part of the eye. The iris dilates and constricts to change the
diameter and size of the pupil and thus the amount of light reaching the retina.
The pupil is the black opening in the center of the iris. The purpose of the pupil is to allow light
to enter the eye so it can be focused on the retina to begin the process of sight.
Aqueous humor is the clear liquid found between the cornea and the lens of the eye. The
aqueous humor helps maintain intraocular pressure and nourishes the lens and cornea.
The diagram below illustrates the structures of the eye.
(25 Questions)
Verified Q&As with Explanations
LATEST QUESTIONS
, 1. 1. Question
Which of the following anatomical terms is correctly matched with its meaning?
cranial/skull
carpal/foot
inguinal/neck
cervical/wrist
Answer: cranial/skull
Cranial refers to the bone comprising the skull.
Carpal refers to the bone comprising the wrist.
Cervical refers to the region of vertebrae in the neck.
Inguinal is the superior region of the thigh.
, 2. 2. Question
Which part of the eye allows us to see color?
Aqueous humor
Iris
Pupil
, Retina
Answer: Retina
The retina is a thin layer of tissue that lines the back of the inside of the eye, near the optic
nerve. The purpose of the retina is to receive light that the lens has focused, convert the light
into neural signals, and send those signals to the brain for visual recognition. There are two
types of photoreceptor cells found in the retina: rods and cones.
o Rod cells can function in low levels of light but do not pick up on colors. This is
why things we see can see at night but things tend to look more grey and fuzzy.
Rods also help with our peripheral vision, as they are concentrated on the outer
edges of the retina.
o Cone cells need more intense light to function and are the receptors that allow
us to see colors. Most cone cells are found in the fovea, at the back of the retina.
The fovea helps us see details in objects we are looking at. The human eye
contains three different types of cone cells: blue, red, and green. The different
types of colorblindness arise from one, two, or all three types of cone cells not
working properly (or not working at all).
The iris is the pigmented (colored) part of the eye. The iris dilates and constricts to change the
diameter and size of the pupil and thus the amount of light reaching the retina.
The pupil is the black opening in the center of the iris. The purpose of the pupil is to allow light
to enter the eye so it can be focused on the retina to begin the process of sight.
Aqueous humor is the clear liquid found between the cornea and the lens of the eye. The
aqueous humor helps maintain intraocular pressure and nourishes the lens and cornea.
The diagram below illustrates the structures of the eye.
