Free MCQs & Online Quiz Practice for Exams

Q: Which of the following hormones is not released by the anterior pituitary?

A) Melanocyte-stimulating hormone

B) Gonadotropin-releasing hormone

C) Thyroid-stimulating hormone

D) Growth hormone

Q: Parathyroid hormone acts to ensure that

A) Calcium levels in the blood never drop too low

B) Sodium levels in urine are constant

C) Potassium levels in the blood don't escalate

D) The concentration of water in the blood is sufficient

Q: The adrenal cortex produces

A) Adrenaline

B) Calcitonin

C) Epinephrine

D) Aldosterone

Q: Oxytocin is secreted by the endocrine gland named

A) Pituitary gland

B) Thyroid gland

C) Parathyroid gland

D) Adrenal gland

Q: Deficiency of vasopressin or ADH by the pituitary gland leads to

A) Diabetes mellitus

B) Diabetes insipidus

C) Goiter

D) Exophthalmic goiter

Q: The function(s) of oxytocin is/are to

A) Cause the uterus to contract

B) Induce labor

C) Stimulate release of milk during nursing

D) All of the above

Q: In humans, MSH (melanocyte-stimulating hormone)

A) Regulates primary skin color

B) Causes the thyroid to produce thyroxin

C) Governs the rate of tanning

D) Concentration is very low

Q: Which one is non-directed orientation?

A) Taxis

B) Kinesis

C) Tropism

D) Imprinting

Q: Gonadotropin releasing hormone is responsible for the stimulation/release of which hormone?

A) Luteinizing hormone (LH)

B) Progesterone

C) Secretin

D) Insulin

Q: Fertilization of the ovum normally occurs

A) oviduct

B) In the uterus

C) carvex

D) In the vagina

Q: The human egg is swept through the oviduct toward the uterus by

A) The beating of the eggs' cilia

B) Rhythmic contraction of the oviduct

C) Contraction of the uterus

D) Beating of the cilia in the oviduct

Q: Embryo implants in the__________ of the uterus.

A) Perimetrium

B) Myometrium

C) Endometrium

D) Cervix

Q: The corpus luteum is formed at the site of

A) Fertilization

B) Ovulation

C) Menstruation

D) Implantation

Q: Which will occur as a result of non-descent of the testes?

A) Male sex hormones will not be circulated in the body

B) Sperm will have no means of exit from the body

C) Inadequate blood supply will retard the development of the testes

D) Viable sperm will not be produced

Q: Within the ovary, progesterone is produced by the

A) Corpus albicans

B) Corpus luteum

C) Tertiary follicles

D) Primary follicles

Q: The basic difference between spermatogenesis and oogenesis is that

A) During spermatogenesis two more polar bodies are produced

B) The mature ovum is haploid while the sperm is 2n

C) Spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only

D) In oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced

Q: The uterine layer which is shed with each monthly cycle is

A) Endometrium

B) Perimetrium

C) Tunica albuginea

D) Myometrium

Q: The protective coat which surrounds the embryo is known as

A) Amnion

B) Chorion

C) Allantois

D) Chorio-allantoic

Q: The outer layer of the blastocyst, which later attaches to the uterus

A) Decidua

B) Trophoblast

C) Amnion

D) Inner cell mass

Q: Identical twins result from the fertilization of

A) One ovum by one sperm

B) One ovum by two sperms

C) Two ova by two sperms

D) Two ova by one sperm