1. Put the following events in the order in which they occur during bone growth, starting with the
earliest event at the top
● Bone models of a fetus are made of cartilage
● Cartilage matrix hardens with calcium calts
● Capillaries penetrate degenerating areas of cartilage
● Bone cells migrate in via blood vessels and secrete a matrix
● After birth, bone growth occurs at cartilage growth plates until the late teens
2. Select all of the places occupied by spongy bone. More than one option may be
correct.
● sandwiched between layers of compact bone
● bulbous tips of long bones
3. Put the following events of a muscle contraction in order from first (at the top) to last
(at the bottom).
● An electrical impulse arrives from a motor neuron, and acetylcholine is released
● An electrical wave travels along the muscle cell membrane
● An electrical signal travels down the T tubules
● The endoplasmic reticulum releases calcium ions
● Calcium ions bind to troponin, and tropomyosin moves aside
● Myosin filaments form cross-bridge with the actin filaments
●
4. Put the following events describing how a muscle contracts in order from first (at the
top) to last (at the bottom).
● Calcium binds to troponin
● Myosin heads attach to actin , forming cross bridges
● Cross-bridges bend, causing the actin to slide past myosin
● Myosin head binds a molecule of ATP
● Myosin head releases actin
● Myosin head swivels back to its original position
5. All bones are porous.
● True
, 6. All bones are porous to some degree. They contain microscopic holes and canals,
allowing blood vessels and nerves to pass through. Additionally, bones have two main
types:
● Compact bone: Dense but still has tiny canals (Haversian systems).
● Spongy (cancellous) bone: More porous, found at the ends of long bones and
inside vertebrae.
"Bones include both compact bone, which is hard and dense, and spongy bone,
which is lighter and contains marrow-filled spaces."
7. What bone tissue is soft and can produce blood cells and platelets? Multiple choice
question. yellow bone marrow compact bone red bone marrow cartilage
● red bone marrow.
Red bone marrow is soft tissue found in spongy bone that produces red blood cells,
white blood cells, and platelets.
Yellow bone marrow stores fat.
Compact bone is hard and dense, not involved in blood cell production.
Cartilage is a flexible connective tissue, not a site of blood cell production.
8. Connective tissue that covers the ends of the bones and consists of chondrocytes in
a protein matrix is called cartilage.
9. Osteocytes produce Blank______. Multiple choice question. red blood cells and
platelets a hard, mineral-rich matrix red and yellow bone marrow a rubbery matrix
containing elastin
● a hard, mineral-rich matrix.
Osteocytes are mature bone cells that help maintain the hard, mineral-rich matrix of
bone, primarily composed of calcium and phosphate.
Red blood cells and platelets are produced by red bone marrow, not osteocytes.
Red and yellow bone marrow are types of tissue within bones, but not produced by
osteocytes.
A rubbery matrix containing elastin is characteristic of cartilage, produced by
chondrocytes, not osteocytes.
earliest event at the top
● Bone models of a fetus are made of cartilage
● Cartilage matrix hardens with calcium calts
● Capillaries penetrate degenerating areas of cartilage
● Bone cells migrate in via blood vessels and secrete a matrix
● After birth, bone growth occurs at cartilage growth plates until the late teens
2. Select all of the places occupied by spongy bone. More than one option may be
correct.
● sandwiched between layers of compact bone
● bulbous tips of long bones
3. Put the following events of a muscle contraction in order from first (at the top) to last
(at the bottom).
● An electrical impulse arrives from a motor neuron, and acetylcholine is released
● An electrical wave travels along the muscle cell membrane
● An electrical signal travels down the T tubules
● The endoplasmic reticulum releases calcium ions
● Calcium ions bind to troponin, and tropomyosin moves aside
● Myosin filaments form cross-bridge with the actin filaments
●
4. Put the following events describing how a muscle contracts in order from first (at the
top) to last (at the bottom).
● Calcium binds to troponin
● Myosin heads attach to actin , forming cross bridges
● Cross-bridges bend, causing the actin to slide past myosin
● Myosin head binds a molecule of ATP
● Myosin head releases actin
● Myosin head swivels back to its original position
5. All bones are porous.
● True
, 6. All bones are porous to some degree. They contain microscopic holes and canals,
allowing blood vessels and nerves to pass through. Additionally, bones have two main
types:
● Compact bone: Dense but still has tiny canals (Haversian systems).
● Spongy (cancellous) bone: More porous, found at the ends of long bones and
inside vertebrae.
"Bones include both compact bone, which is hard and dense, and spongy bone,
which is lighter and contains marrow-filled spaces."
7. What bone tissue is soft and can produce blood cells and platelets? Multiple choice
question. yellow bone marrow compact bone red bone marrow cartilage
● red bone marrow.
Red bone marrow is soft tissue found in spongy bone that produces red blood cells,
white blood cells, and platelets.
Yellow bone marrow stores fat.
Compact bone is hard and dense, not involved in blood cell production.
Cartilage is a flexible connective tissue, not a site of blood cell production.
8. Connective tissue that covers the ends of the bones and consists of chondrocytes in
a protein matrix is called cartilage.
9. Osteocytes produce Blank______. Multiple choice question. red blood cells and
platelets a hard, mineral-rich matrix red and yellow bone marrow a rubbery matrix
containing elastin
● a hard, mineral-rich matrix.
Osteocytes are mature bone cells that help maintain the hard, mineral-rich matrix of
bone, primarily composed of calcium and phosphate.
Red blood cells and platelets are produced by red bone marrow, not osteocytes.
Red and yellow bone marrow are types of tissue within bones, but not produced by
osteocytes.
A rubbery matrix containing elastin is characteristic of cartilage, produced by
chondrocytes, not osteocytes.
