ATI TEAS PRACTICE TEST A
QUESTIONS WITH ANSWERS
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 ANSWER-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?
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 ANSWER-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 ANSWER-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?
A. Ribosome
B. Lysosome
C. Mitochondrion
D. Nucleolus - CORRECT ANSWER-B. Lysosome
Lysosomes are specialized vacuoles containing digestive
enzymes.
Which of the following are sesamoid bones?
A. Phalanges
B. Patellae
C. Scapulae
D. Metatarsals - CORRECT ANSWER-B. Patellae
Patellae are sesamoid bones, which develop in response to
strain. Patellae are also considered short bones.
Which of the following chemical compounds prevents the lungs
from collapsing?
A. Mucus
B. Surfactant
C. Enzymes
D. Buffers - CORRECT ANSWER-B. Surfactant
QUESTIONS WITH ANSWERS
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 ANSWER-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?
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 ANSWER-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 ANSWER-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?
A. Ribosome
B. Lysosome
C. Mitochondrion
D. Nucleolus - CORRECT ANSWER-B. Lysosome
Lysosomes are specialized vacuoles containing digestive
enzymes.
Which of the following are sesamoid bones?
A. Phalanges
B. Patellae
C. Scapulae
D. Metatarsals - CORRECT ANSWER-B. Patellae
Patellae are sesamoid bones, which develop in response to
strain. Patellae are also considered short bones.
Which of the following chemical compounds prevents the lungs
from collapsing?
A. Mucus
B. Surfactant
C. Enzymes
D. Buffers - CORRECT ANSWER-B. Surfactant
