BI 121 (Forbes, GRCC)–LECTURE Exam #03 questions
with verified answers
#Osteoclasts > #Osteoblasts (Aging of the Skeleton) Ans✓✓✓ Happens
when bone removal exceeds bone deposition, which can result in
osteoporosis. Spongy bone (trabecula) reabsorbed before compact
bone
Acromegaly Ans✓✓✓ Increased levels of HGH results in enlarged
hands, feet, jaw, and organs
Actin Ans✓✓✓ Protein backbone of thin filament
Aging of the Skeleton Ans✓✓✓ #Osteoclasts > #osteoblasts, Height
reduction, Low collagen/ Ca ratio, Increased interosteonic gaps, Joints
degeneration
All fibers of a motor unit respond at... (Motor Unit Activation)
Ans✓✓✓ the same time
All motor units of a muscle may not... (Motor Unit Activation) Ans✓✓✓
respond at once
Ambient ATP (Muscle Energetics) Ans✓✓✓ is the source of an initial
contraction and relaxation
,Amphiarthrotic Ans✓✓✓ Some movement (e.g.: female coccyx)
Anatomy of a Whole Muscle (Overview) Ans✓✓✓ Myofilaments,
Myofibrils, Muscle cells, Fascicles
Aponeuroses (Skeletal Muscle CT Anatomy) Ans✓✓✓ Broad sheets of
CT that attach adjoining muscles or to broad areas of bone
Appositional Ans✓✓✓ Increases diameter of long bones
Arthritis Ans✓✓✓ Inflammation of a joint
Arthropathology Ans✓✓✓ Arthritis, Osteo, Rheumatoid, Bacterial,
Joint hypermobility syndrome, Gout, Dislocations, Torn ACL/meniscus,
Sprains, Osteomyelitis
Articular Cartilage (f) Ans✓✓✓ f: Decrease friction and absorb shock
Articulate Ans✓✓✓ To put together
As ambient ATP and creatine phosphate decrease... Ans✓✓✓ cells
depend upon cellular respiration for ATP (from breakdown of glycogen)
, As stimulation levels increase... (Motor Unit Activation) Ans✓✓✓ more
motor units respond ("recruitment")
Atrophy Ans✓✓✓ Lack of use. Capillaries and mitochondria, actin and
myosin decrease, resulting in a decrease in muscle size
Bacterial Arthritis Ans✓✓✓ Third form of arthritis. Not osteo or
rheumatoid
Blood Cell Formation (F of Bones) Ans✓✓✓ Formed in red marrow.
Postpartum in spongy tissue of flat bones and vertebrae
Bone formation begins at.... Ans✓✓✓ about 6 weeks
Bulging (Slipped) Disk Ans✓✓✓ With age, annulus cracks, nucleus loses
firmness
Bursae (Definitions & f) Ans✓✓✓ D: Synovial membrane-lined
chambers/sacs with synovial fluid. f: Provides cushioning over bony
projections for movement of tendons (e.g.: olecranon process)
Cardiac Muscle (Characteristics) Ans✓✓✓ In heart, Involuntary, Rapid
contraction and no fatigue
with verified answers
#Osteoclasts > #Osteoblasts (Aging of the Skeleton) Ans✓✓✓ Happens
when bone removal exceeds bone deposition, which can result in
osteoporosis. Spongy bone (trabecula) reabsorbed before compact
bone
Acromegaly Ans✓✓✓ Increased levels of HGH results in enlarged
hands, feet, jaw, and organs
Actin Ans✓✓✓ Protein backbone of thin filament
Aging of the Skeleton Ans✓✓✓ #Osteoclasts > #osteoblasts, Height
reduction, Low collagen/ Ca ratio, Increased interosteonic gaps, Joints
degeneration
All fibers of a motor unit respond at... (Motor Unit Activation)
Ans✓✓✓ the same time
All motor units of a muscle may not... (Motor Unit Activation) Ans✓✓✓
respond at once
Ambient ATP (Muscle Energetics) Ans✓✓✓ is the source of an initial
contraction and relaxation
,Amphiarthrotic Ans✓✓✓ Some movement (e.g.: female coccyx)
Anatomy of a Whole Muscle (Overview) Ans✓✓✓ Myofilaments,
Myofibrils, Muscle cells, Fascicles
Aponeuroses (Skeletal Muscle CT Anatomy) Ans✓✓✓ Broad sheets of
CT that attach adjoining muscles or to broad areas of bone
Appositional Ans✓✓✓ Increases diameter of long bones
Arthritis Ans✓✓✓ Inflammation of a joint
Arthropathology Ans✓✓✓ Arthritis, Osteo, Rheumatoid, Bacterial,
Joint hypermobility syndrome, Gout, Dislocations, Torn ACL/meniscus,
Sprains, Osteomyelitis
Articular Cartilage (f) Ans✓✓✓ f: Decrease friction and absorb shock
Articulate Ans✓✓✓ To put together
As ambient ATP and creatine phosphate decrease... Ans✓✓✓ cells
depend upon cellular respiration for ATP (from breakdown of glycogen)
, As stimulation levels increase... (Motor Unit Activation) Ans✓✓✓ more
motor units respond ("recruitment")
Atrophy Ans✓✓✓ Lack of use. Capillaries and mitochondria, actin and
myosin decrease, resulting in a decrease in muscle size
Bacterial Arthritis Ans✓✓✓ Third form of arthritis. Not osteo or
rheumatoid
Blood Cell Formation (F of Bones) Ans✓✓✓ Formed in red marrow.
Postpartum in spongy tissue of flat bones and vertebrae
Bone formation begins at.... Ans✓✓✓ about 6 weeks
Bulging (Slipped) Disk Ans✓✓✓ With age, annulus cracks, nucleus loses
firmness
Bursae (Definitions & f) Ans✓✓✓ D: Synovial membrane-lined
chambers/sacs with synovial fluid. f: Provides cushioning over bony
projections for movement of tendons (e.g.: olecranon process)
Cardiac Muscle (Characteristics) Ans✓✓✓ In heart, Involuntary, Rapid
contraction and no fatigue
