HFDS QUIZ 1

Question 1

CELLS Responsible for BONE REMODELING & Their Functions

Answer 1

OSTEOBLASTS
OSTEOCLASTS
OSTEOCYTES
BONE LINING CELLS

Question 2

Build NEW BONE by producing COLLAGEN and MINERALIZING BONE MATRIX.

Answer 2

OSTEOBLASTS

Question 3

BREAK DOWN BONE TISSUE by RESORBING MINERALS, helping in bone remodeling.

Answer 3

OSTEOCLASTS

Question 4

MATURE BONE CELLS that MAINTAIN bone STRUCTURE and communicate with other bone cells.

Answer 4

OSTEOCYTES

Question 5

FLAT CELLS covering bone surfaces, regulating CALCIUM EXCHANGE.

Answer 5

BONE LINING CELLS

Question 6

HORMONES Involved in Bone Remodeling & Their Effects

Answer 6

Parathyroid Hormone (PTH)
Calcitonin
Vitamin D (Calcitriol)
Estrogen & Testosterone
Growth Hormone
Cortisol

Question 6

INCREASES BLOOD CALCIUM by stimulating osteoclast activity.

Answer 6

Parathyroid Hormone (PTH)

Question 7

Lowers blood calcium by inhibiting osteoclasts, promoting bone formation.

Answer 7

Calcitonin

Question 8

ENHANCES CALCIUM ABSORPTION, aiding bone mineralization.

Answer 8

Vitamin D (Calcitriol)

Question 8

MAINTAIN BONE DENSITY; ______ inhibits osteoclasts.

Answer 8

Estrogen & Testosterone

Question 9

STIMULATED BONE GROWTH, especially in youth.

Answer 9

Growth Hormone

Question 9

HIGH LEVELS can lead to BONE LOSS by increasing bone resorption.

Answer 9

Cortisol

Question 10

A condition where bone resorption OUTPACES BONE FORMATION, leading to weakened, porous bones. It is common in aging individuals, especially postmenopausal women due to reduced estrogen levels.

Answer 10

OSTEOPOROSIS