ATI TEAS PRACTICE TEST A
QUESTIONS EXAM WITH
100% CORRECT ANSWERS
2025
Which of the following cell types provides a waterproofing
function for the outer layers of skin?
A. Melanocytes
B. Keratinocytes
C. Merkel cells
D. Langerhans cells correct answers >> B.
Keratinocytes
Keratinocytes contain the protein keratin. They are
produced in the epidermis and migrate upwards. The
tight junctions between cells prevent water entry. They
eventually form a layer of dead cells on the skin surface,
which produces a waterproofing effect.
A person is suddenly frightened. Which of the following
reactions occurs next?
GRADED A+
, A. Liver cells absorb glucose from the blood stream.
B. Blood vessels supplying skeletal muscles constrict.
C. Blood vessels supplying the intestines dilate.
D. Liver cells release glucose into the blood stream.
correct answers >> D. Liver cells release glucose into
the blood stream.
Epinephrine causes liver cells to break down glycogen,
which causes an increase in sugar in the blood stream.
Kidneys remove which of the following from the blood?
A. Platelets
B. Salts
C. Oxygen
D. Fat correct answers >> B. Salts
Salts are removed by the kidneys.
Which of the following structures within a human cell is
responsible for recycling the materials no longer
functional or needed within the cell?
GRADED A+
QUESTIONS EXAM WITH
100% CORRECT ANSWERS
2025
Which of the following cell types provides a waterproofing
function for the outer layers of skin?
A. Melanocytes
B. Keratinocytes
C. Merkel cells
D. Langerhans cells correct answers >> B.
Keratinocytes
Keratinocytes contain the protein keratin. They are
produced in the epidermis and migrate upwards. The
tight junctions between cells prevent water entry. They
eventually form a layer of dead cells on the skin surface,
which produces a waterproofing effect.
A person is suddenly frightened. Which of the following
reactions occurs next?
GRADED A+
, A. Liver cells absorb glucose from the blood stream.
B. Blood vessels supplying skeletal muscles constrict.
C. Blood vessels supplying the intestines dilate.
D. Liver cells release glucose into the blood stream.
correct answers >> D. Liver cells release glucose into
the blood stream.
Epinephrine causes liver cells to break down glycogen,
which causes an increase in sugar in the blood stream.
Kidneys remove which of the following from the blood?
A. Platelets
B. Salts
C. Oxygen
D. Fat correct answers >> B. Salts
Salts are removed by the kidneys.
Which of the following structures within a human cell is
responsible for recycling the materials no longer
functional or needed within the cell?
GRADED A+
