Question 1

Which of the following best describes the process of fertilization in humans?

Accepted Answer

Fusion of a sperm cell and an ovum in the outer third of the oviduct

Question 2

Which structure forms as a result of continued cell divisions of the morula and is responsible for implantation in the uterine wall?

Accepted Answer

Blastocyst

Question 3

What is the primary function of the placenta during pregnancy?

Accepted Answer

To anchor the fetus and exchange nutrients and waste between mother and fetus

Question 4

Which of the following is NOT a derivative of the mesoderm germ layer?

Accepted Answer

Nervous tissue

Question 5

A woman experiences severe abdominal pain and internal bleeding during early pregnancy. Ultrasound reveals the embryo is developing in the fallopian tube. What is the most likely diagnosis?

Accepted Answer

Ectopic pregnancy

Question 6

Which of the following best explains why maternal and fetal blood do not mix in the placenta?

Accepted Answer

A thin placental barrier separates maternal and fetal blood, allowing selective exchange

Question 7

During which stage of labor does the expulsion of the placenta occur?

Accepted Answer

Stage three

Question 8

Which of the following is a key difference between monozygotic and dizygotic twins?

Accepted Answer

Monozygotic twins share the same genetic code

Question 9

A newborn is assessed using the Apgar score. Which of the following parameters is NOT included in the Apgar assessment?

Accepted Answer

Blood glucose level

Question 10

Which of the following conditions is characterized by hypertension, proteinuria, and edema during pregnancy and may progress to a life-threatening state?

Accepted Answer

Preeclampsia

Question 11

Which of the following best describes the main developmental change during the fetal phase (week 8 to birth)?

Accepted Answer

Rapid growth and maturation of organ systems

Question 12

A 55-year-old woman experiences hot flashes, sleep disturbances, and vaginal dryness. Which physiological process is most likely responsible for her symptoms?

Accepted Answer

Menopause

Question 13

Which of the following is a common effect of aging on the skeletal system?

Accepted Answer

Development of bone spurs and increased risk of fractures

Question 14

Which theory of aging suggests that cellular damage increases due to the accumulation of oxygen free radicals?

Accepted Answer

Free-radical theory

Question 15

A 70-year-old man has difficulty hearing high-frequency sounds and experiences reduced elasticity of his eardrum. Which age-related change best explains his symptoms?

Accepted Answer

Frequency deafness due to loss of hair cells and ossicle fixation

Question 16

Which of the following best describes the main function of stem cells during embryonic development?

Accepted Answer

To reproduce and differentiate into specialized cell types

Question 17

A newborn fails to digest lactose in breast milk and develops diarrhea. What is the most likely explanation?

Accepted Answer

Lactose intolerance due to lack of lactase enzyme

Question 18

Which of the following is a major cardiovascular change that occurs at birth?

Accepted Answer

Closure of the foramen ovale and ductus arteriosus

Question 19

Which of the following best describes the postnatal period?

Accepted Answer

The period from birth until death

Question 20

A 65-year-old man has difficulty starting urination and cannot completely empty his bladder. Which age-related condition most likely contributes to his symptoms?

Accepted Answer

Benign prostatic hypertrophy

Growth, Development, and Aging: From Conception to Senescence

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