and Answers A+ Guide
which of the following helps to prevent pathogens from invading the body?
a) histamines
b)mucus
c)t-cells
d)macrophages - correct answers✅✅mucus, skin, secretion (first step).
A bacteria cell enters the body through a cut in the skin. Which of the
following describes the immune response that would occur next?
a) cytotoxic t-cells
b)helper t-cells are activated
c)histamines are released
d) antigens are released - correct answers✅✅histamines (inflammatory
response) are released
Which of the following types of cells produce antibodies?
a) T-cell
b)plasma-cells
c)memory cells
d)macrophages - correct answers✅✅plasma-cells (The helper T cell
induces
the B cell to multiply rapidly into secretory cells called "plasma cells." These
plasma cells will then produce large amounts of an antibody that can bind
the antigen.)
which of the following best describes the purpose of a vaccine?
A.)To produce extra inflammatory responses such as the release of
histamines
,TEAS practice test (ATI) Questions
and Answers A+ Guide
B.)To practice passive immunity
C.)To produce antibodies in case of future infection
D.)To increase macrophage production - correct answers✅✅to produce
antibodies in case of future infection. (Vaccinations introduce antigens, which
are weakened or killed, to elicit an immune response.)
Which of the following parts of the male genitourinary system also transports
sperm?
A. Ureter
B. Urethra
C. Uterus
D. Urinary bladder - correct answers✅✅urethra (In males, the urethra
passes through the penis and also carries sperm. Females have a much
shorter urethra)
Which of the following waste products from digestion does the kidney
remove?
A. Nitrogen
B. Sodium chloride
C. Protein
D. Carbon - correct answers✅✅nitrogen nitrogenous waste from protein
digestion is toxic and must be removed because it will form ammonia.
Which of the following best describes the outcome if the kidneys stopped
functioning?
A. Blood would increase its carbon dioxide concentration.
B. Blood would fill with waste and the human body would not be able to
maintain homeostasis.
,TEAS practice test (ATI) Questions
and Answers A+ Guide
C. The kidneys would fill with urine.
D. The frequency in which a human excretes urine would increase. - correct
answers✅✅blood would fill with waste and the human body would not be
able to maintain homeostasis.
Which of the following structures is the functional unit of the kidney?
A. Renal capillaries
B. Glomerulus
C. Nephron
D. Cortex - correct answers✅✅nephron (The functional unit of the kidney
is the nephron.)
In two to three sentences, explain the purpose of blood pressure in the
kidney. - correct answers✅✅The pressure of the blood helps the
glomerulus
filter out wastes and return vital nutrients through the renal vein to the
blood. Nephrons are a system of microscopic tubes that use
various pressure levels to remove wastes and reabsorb important molecules
and water.
Which of the following lists the primary parts of the heart?
A. Blood cells
B. Muscle tissue split into two chambers
C. Muscle tissue split into four chambers
D. Four ventricles - correct answers✅✅muscle tissue split into four
chambers
, TEAS practice test (ATI) Questions
and Answers A+ Guide
Which of the following blood components is responsible for transporting
oxygen?
A. Red blood cells
B. Plasma
C. Dissolved gases
D. Leukocytes - correct answers✅✅Red blood cells ( RBC contain
hemoglobin and transport oxygen from the lungs to the rest of the body.)
Which of the following chambers pumps blood toward the lungs?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle - correct answers✅✅RV. (The right ventricle pumps the
blood toward the lungs, where it picks up oxygen and loses carbon dioxide.)
Which of the following statements best describes the function of veins?
A. Veins carry deoxygenated blood.
B. Veins carry oxygenated blood.
C. Veins carry blood back to the heart.
D. Veins carry blood away from the heart. - correct answers✅✅(C) Then,
the oxygenated blood
returns to the heart through veins.
In two to three sentences, describe two chambers of the heart that have
thicker walls. Why would