BIO 201 Exam 2 UPDATED ACTUAL Exam Questions and CORRECT Answers

BIO 201 Exam 2 UPDATED ACTUAL
Exam Questions and CORRECT Answers
Bone Classification - CORRECT ANSWER - Long Bones
Short Bones
Sesamoid Bones
Flat Bones
Irregular Bones


Intramembranous Bones - CORRECT ANSWER - originate within sheetlike layers of
connective tissues
they are the broad, flat bones


Endochondral Bones - CORRECT ANSWER - Bones begin as hyaline cartilage
These are most bones of the skeleton


First layer of cells - CORRECT ANSWER - Closest to the end of epiphysis
Resting cells
Anchors epiphyseal plate to epiphysis


Second layer of cells - CORRECT ANSWER - Many rows of young cells
Undergoing mitosis


Third layer of cells - CORRECT ANSWER - Older cells
Left behind when new cells appear
Cells enlarging and becoming calcified


Fourth layer of cells - CORRECT ANSWER - Thin

, Dead cells
Calcified extracellular matrix


Bone Resorption - CORRECT ANSWER - action of osteoclasts and parathyroid hormone
aka parathormone aka PTH


Factors that Affect Bone Development, Growth, and Repair - CORRECT ANSWER -
Deficiency of Vitamin A
Deficiency of Vitamin C
Deficiency of Vitamin D
Insufficient Growth Hormone
Excessive Growth Hormone
Insufficient Thyroid Hormone
Sex Hormones
Physical Stress


Deficiency of Vitamin A - CORRECT ANSWER - retards bone development



Deficiency of Vitamin C - CORRECT ANSWER - results in fragile bones



Deficiency of Vitamin D - CORRECT ANSWER - rickets, osteomalacia



Insufficient Growth Hormone - CORRECT ANSWER - dwarfism



Excessive Growth Hormone - CORRECT ANSWER - gigantism, acromegaly



Insufficient Thyroid Hormone - CORRECT ANSWER - delays bone growth