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APHY 102 EXAM 1 2025 SPRING QUESTIONS AND ANSWERS GRADED A+(IVY TECH COLLEGE) Diabetes insipidus is caused by ADH deficiency. T/F: Persons with type AB blood are sometimes called universal donors. False Steroid hormones are soluble in lipids. all of the above. T/F: Plasma contains fibrinogen, serum does not. True
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Diabetes insipidus is caused by
ADH deficiency.
T/F: Persons with type AB blood are sometimes called universal donors.
False
Steroid hormones
are soluble in lipids.
all of the above.
T/F: Plasma contains fibrinogen, serum does not.
True
sweat gland is an example of a(n) _______ gland.
exocrine
The percentage of red blood cells in a sample of human blood is normally about
45%.
The correct sequence of parts that carry cardiac impulses is
SA node, AV node, AV bundle, Purkinje fibers
Tropic hormones
function in only one sex.
stimulate certain endocrine glands to secrete hormones.
Bile salts function like detergents in that they ___________ fat globules.
emulsify
In an autoimmune disease, the immune response is directed toward
cells of the body ("self").
Cholesterol functions in the body as an energy source, and furnishes molecular components for the synthesis of various sex hormones.
False
Deficiency of vitamin ___ causes osteomalacia.
D
Copper is essential for producing melanin and myelin.
True
Inhibition of which hormone may help in weight loss?
Ghrelin
The right atrium receives blood directly from
the superior vena cava, inferior vena cava, and coronary sinus.
Which of the following provide(s) a source of complete proteins?
Eggs
Which of the following is a trace element?
Iron
The digestive system
ingests food, propels food, mechanically and chemically breaks down food, absorbs nutrients, and defecates the remainder.
A triglyceride consists of
glycerol and three fatty acids.
When a person's pulse is taken by palpation near the thumb on the wrist, which artery is felt?
Radial artery
The structure of a lymphatic vessel is most similar to that of a(n)
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From the stomach, food passes into the duodenum, then the jejunum, and then the ileum.
True
Lymph transports fat molecules with longer chains of carbon atoms away from the intestine.
True
The inflation reflex is activated when stretch receptors are stimulated during inspiration.
True
Acidosis is a pH of arterial blood
below 7.
Acid-base buffer systems minimize pH changes by
converting strong acids to weak acids.
The reabsorption of glucose occurs primarily through
proximal convoluted tubule.
nephron loop.
The mucous membrane lining the nasal cavity
all of the above.
Intracellular fluids have high concentrations of
potassium and phosphate ions.
The respiratory center is most likely to increase the breathing rate if the
pH of body fluids is decreasing.
The micturition reflex can be voluntarily controlled by the?
relaxation of the external urethral sphincter.
The ________ is the tube that conveys urine outside the body.
urethra
Hyperventilation leads to
respiratory alkalosis.
When sodium ions are reabsorbed through the wall of the renal tubule by active transport, chloride ions are
reabsorbed by passive transport.
T/F Kidneys help to regulate acid-base balance of the blood by secreting OH-.
False
A product of the metabolism of certain nucleic acid bases is
uric acid.
The renal medulla is composed of _____, whereas the renal cortex is composed of _____.
renal pyramids; renal corpuscles
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T/F Chemical buffer systems act rapidly against shifts in pH, whereas physiological buffer systems function more slowly.
True
Breathing functions to
deliver oxygen to cells, where it takes part in the reactions of cellular respiration that liberate energy from nutrient molecules and get rid of carbon dioxide, which maintains the pH of the internal environment.
Water balance and electrolyte balance are interdependent because
electrolytes are dissolved in water.
Hemodialysis involves
an artificial kidney
A circumcision removes
prepuce
The epididymis, coiled on the outer surface of the testis, becomes the
ductus deferens.
The structure the sperm enters upon exiting the ductus deferens is the
ejaculatory duct.
Sperm cells mature in the
epididymides
The epididymis is a _____ and it _____.
tightly coiled tube on the outside of the testis; is the location for sperm maturation
The hormone responsible for the development and maintenance of male secondary sex characteristics is
testosterone.
The interstitial cells of the testes produce
androgens.
The tubular part of the uterus that extends downward into the upper vagina is the
cervix.
Fertilization normally occurs in the
uterine tube
The inner mucosal layer of the uterine wall is the
endometrium
Menopause is due to aging of the
ovaries
Fertilization usually occurs in the
uterine tube
The hormone oxytocin aids the birth process by stimulating
uterine wall contractions.
Labor is regulated by
positive feedback control
The placenta is composed of tissues from the
mother and embryo
Which of the following is (are) true in regard to the fetal stage of development?
It begins 8 weeks after fertilization.
The organ systems are mostly formed, although immature.
The head is disproportionately large compared to the rest of the body at the beginning of the stage. (All of the above)
Which of the following adult structures is not derived from the same primary germ layer as the others?
nerves
A blastomere is a _____ and a blastocyst is _____.
cell produced by cleavage; a hollow ball of cells
The major body part(s) derived from ectoderm is/are
nervous system and skin.
The major body parts derived from mesoderm are the
muscle tissue, bone tissue, and bone marrow.
The chorion _____ and the amnion _____.
projects into the endometrium and helps form the placenta; is a membrane that encircles a developing embryo
Identical alleles are said to be
homozygous.
An allele that masks the effect of another is
dominant.
In incomplete dominance,
one allele is inactive.
the heterozygous phenotype is intermediate between that of either homozygote
A procedure used to obtain enough fetal tissue sampled through the cervix to test for genetic disorders without culturing cells is
chorionic villus sampling.
A human cell that has 47 chromosomes is
trisomic.
T/F: We can predict the likelihood of a particular inherited trait occurring in a particular family member by consulting the ways that genes are transmitted on chromosomes.
True
T/F: Freckles are a phenotype and the allele combination that causes a clotting disorder is a genotype.
True
T/F: A trait determined by more than one gene is polygenic.
True
T/F: Absence of the SRY gene and expression of the Wnt4 gene are necessary for female reproductive structures to develop in an embryo and fetus.
True
Which of the following is (are) forms of contraception?
All of the above
