COHN TAMU BIOL 319 Test 2 Questions and Answers All Correct 2025 Latest Update
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COHN TAMU BIOL 319
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COHN TAMU BIOL 319
COHN TAMU BIOL 319 Test 2 Questions and Answers All Correct 2025 Latest Update
What cell is primarily responsible for releasing Ca^2+ and PO4^3- into the blood? - Answer-Osteoclast
What is the net result of chondrocytes in the epiphyseal plate undergoing calcification? - Answer-Provide mat...
COHN TAMU BIOL 319 Test 2 Questions
and Answers All Correct 2025 Latest
Update
What cell is primarily responsible for releasing Ca^2+ and PO4^3- into the blood? -
Answer-Osteoclast
What is the net result of chondrocytes in the epiphyseal plate undergoing calcification? -
Answer-Provide material to build new bone for lengthening long bones
Growth occurs in what direction at the epiphyseal plate? - Answer-From epiphysis to
diaphysis
Once calcified chondrocytes reach the diaphysis what happens to them? - Answer-
Osteoclasts dissolve them and osteoblasts use the dissolved material to form new bone
matrix
What are the other names for spongy bone? - Answer-- Trabecular bone
- Cancellous bone
What type of cartilage covers the joint portion of bones? - Answer-Articular (hyaline)
cartilage
T/F: Spongy bone contains air spaces between struts and beams. - Answer-True
What comprises diploë? - Answer-Spongy bone and red bone marrow
Red marrow is primarily found in _________ while yellow marrow is primarily found in
________. - Answer-Juveniles; adults
Where is spongy bone concentrated? - Answer-Upper portion of the diaphysis
What is another name for compact bone? - Answer-Cortical bone
What is the major function of yellow marrow? - Answer-Fat reserves
Define: Medullary Cavity - Answer-Space within bones that holds marrow
What does red marrow produce? - Answer-Red blood cells
, Once red marrow in long bones is replaced by yellow marrow, where are red blood cells
produced? - Answer-Hips, vertebrae, and cranium
In what bones is red marrow replaced by yellow marrow? - Answer-Long bones
What are the two layers of the periosteum and what are made of? - Answer-Two layers:
- Inner: Cambian layer, osteoprogenitor cells
- Outer: Fibrous layer, dense irregular tissue and fibroblasts
What comprises compact bone? - Answer-Osteons
Define: Haversion canal - Answer-Conduits between lacunae that allow for one nerve,
one artery, and one vein.
What's another name for a haversion canal? - Answer-Central canal
What is the formal name for beams and struts wrt bone? - Answer-Trabeculae
Trabeculae are filled with _________. - Answer-Marrow
Trabeculae are covered by a layer called ___________? - Answer-Endosteum
Within bone, how are trabeculae arranged? - Answer-Along stress lines
T/F: The arrangement of trabeculae cannot change - Answer-False: Their pattern
change with age as individuals go through more and less active times
Ground substance of bone is comprised of __________. - Answer-Protoglycans,
glycoproteins, and water
What is the consistency of ground substance? - Answer-Syrupy
What is organic matrix comprised of? - Answer-Ground substance
What is bone matrix comprised of? - Answer-- Organic matrix
- Extracellular fibers
- Inorganic matrix
Define: Osteoid - Answer-- Non mineralized, organic portion of bone
- Located in bone matrix
What are the extracellular fibers of bone matrix comprised of? - Answer-Collagen
What makes up the inorganic matrix of bone? - Answer-Hydroxyapetite
What is hydroxyapetite's chemical formula? - Answer-Ca5(PO4)3OH
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