Bios 252 Exam 1 Questions with Verified
Correct Answers
Characteristics of cardiac and smooth muscle
Involuntary
Cardiac muscle characteristics
Striations
Uninuclear
Branching cells
intercalated disc
Involuntary
Found only in the walls of the heart
Smooth muscle characteristics
no striations
spindle-shaped cells
single nucleus
involuntary
found in walls of hollow organs
Sarcolemma
plasma membrane of a muscle cell
Epimysium
surrounds entire muscle (entire)
Elasticity
, ability to recoil to resting length
contractibility
ability to shorten
Extensibility
ability to be stretched
Perimysium
surrounds fascicles(parts)
Endomysium
Surrounds individual muscle fibers (every)
ATP function in muscle contraction
Breaks myosin from actin cross bridge
Transmitter @ nmt
Acetylcholine
Depolarization
Na+ entering cell causing inside to become more positive
aerobic respiration
Provides minutes to hours of ATP
creatine phosphate
Immediate energy source
isometric contraction
Correct Answers
Characteristics of cardiac and smooth muscle
Involuntary
Cardiac muscle characteristics
Striations
Uninuclear
Branching cells
intercalated disc
Involuntary
Found only in the walls of the heart
Smooth muscle characteristics
no striations
spindle-shaped cells
single nucleus
involuntary
found in walls of hollow organs
Sarcolemma
plasma membrane of a muscle cell
Epimysium
surrounds entire muscle (entire)
Elasticity
, ability to recoil to resting length
contractibility
ability to shorten
Extensibility
ability to be stretched
Perimysium
surrounds fascicles(parts)
Endomysium
Surrounds individual muscle fibers (every)
ATP function in muscle contraction
Breaks myosin from actin cross bridge
Transmitter @ nmt
Acetylcholine
Depolarization
Na+ entering cell causing inside to become more positive
aerobic respiration
Provides minutes to hours of ATP
creatine phosphate
Immediate energy source
isometric contraction