Lecture 3 Exam

Question 1

Forms dermal bones within sheets of embryonic mesenchyme tissue

Answer 1

Intramembranous ossification

Question 2

Involves ossification centers in which chondrocytes enlarge, die and are replaced by osseous tissue

Answer 2

Endochondral ossification

Question 3

Can no longer occur once the epiphyseal plate is converted into an epiphyseal line

Answer 3

Interstitial growth

Question 4

Involves osteoblasts forming new bone matrix in the periosteum and osteoclasts dissolving old bone matrix within the endosteum

Answer 4

Appositional growth

Question 5

Involves both bone deposition and resorption

Answer 5

Bone remodeling

Question 6

This hormone from the parathyroid gland increases renal calcium absorption and bone resorption while decreasing bone deposition to raise blood calcium levels

Answer 6

PTH

Question 7

This pituitary hormone stimulates cartilage proliferation within epiphyseal plates to elongate bones

Answer 7

Growth hormone

Question 8

Diminished secretion of this sex hormone after menopause can elevate one’s risk of osteoporosis

Answer 8

Estrogen

Question 9

The most active form of vitamin D, this hormone increases intestinal and renal calcium absorption and bone resorption to raise blood calcium levels

Answer 9

Calcitriol

Question 10

This sex hormone stimulates interstitial growth of long bones primarily in males

Answer 10

Testosterone

Question 11

This hormone from the thyroid gland decreases bone resorption while increasing bones deposition and renal calcium loss to lower blood calcium levels

Answer 11

Calcitonin