Question 1

During the third week of embryonic development, the process of neurulation begins. Which of the following best describes neurulation?

Accepted Answer

The development of the neural tube from the ectoderm

Question 2

Which layer of the epidermis is primarily responsible for the production of keratin and provides a barrier against pathogens?

Accepted Answer

Stratum spinosum

Question 3

A patient presents with a burn that affects both the epidermis and the entire dermis, resulting in loss of sensation and a white, leathery appearance. What level of burn severity does this represent?

Accepted Answer

Third-degree burn

Question 4

Which of the following equations correctly represents the diploid number ($2n$) in humans, given that the haploid number ($n$) is 23?

Accepted Answer

$2n = 46$

Question 5

Which of the following best describes the difference between compact bone and spongy bone?

Accepted Answer

Compact bone is composed of osteons, while spongy bone is composed of trabeculae

Question 6

A child inherits a recessive genetic disorder from parents who are both carriers. Using a Punnett square, what is the probability that the child will express the disorder?

Accepted Answer

$\frac{1}{4}$

Question 7

Which of the following is a major derivative of the embryonic mesoderm germ layer?

Accepted Answer

Muscles and bones

Question 8

Which type of gland is responsible for producing sweat and is most numerous in the palms and soles?

Accepted Answer

Eccrine gland

Question 9

Which of the following best describes the function of the arches of the foot?

Accepted Answer

To absorb shock and distribute body weight during movement

Question 10

During meiosis, which event increases genetic variation among offspring?

Accepted Answer

Crossing over between homologous chromosomes

Question 11

Which of the following is true regarding the anatomical differences between male and female pelvises?

Accepted Answer

The female pelvis has a larger pelvic inlet and a broader pubic arch

Question 12

Which of the following best describes a heterozygous genotype?

Accepted Answer

One dominant and one recessive allele are present

Question 13

Which type of bone fracture is characterized by the bone being shattered into multiple pieces?

Accepted Answer

Comminuted fracture

Question 14

Which of the following correctly matches the histological feature with its function in bone tissue?

Accepted Answer

Osteocytes maintain bone tissue

Question 15

Which Mendelian principle explains why alleles for different traits are distributed to gametes independently?

Accepted Answer

Law of Independent Assortment

Question 16

Which layer of the dermis contains the majority of the skin's blood vessels and nerves?

Accepted Answer

Reticular layer

Question 17

A person with genotype $Aa$ for a trait where $A$ is dominant and $a$ is recessive will express which phenotype?

Accepted Answer

Only the dominant trait

Question 18

Which of the following events occurs during fertilization in the first week of development?

Accepted Answer

Fusion of sperm and egg to form a zygote

Question 19

Which of the following is a common bone disease characterized by decreased bone mass and increased fracture risk?

Accepted Answer

Osteoporosis

Question 20

Which process results in two genetically identical daughter cells, each with the same number of chromosomes as the parent cell?

Accepted Answer

Mitosis

Anatomy & Physiology Study Guide: Embryology, Integumentary System, Bones & Skeletal Tissues, Genetics

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