BSC 2085 Exam 3 UPDATED ACTUAL Questions and CORRECT
Answers
Muscle tissue Excitable, contractable, extensive, elastic
Excitable Responsiveness, ability to receive/respond to stimuli
Contractible Ability to shorted when stimulated
Extensible Ability to be stretched or extended when relaxed
Elastic Ability to recoil after being stretched
Types of muscle tissue Skeletal, cardiac, smooth
Skeletal muscle Voluntary, striated, multi nucleated, attached to bones, orderly
Cardiac muscle Heart, striated, branched, involuntary
Smooth muscle Visceral, involuntary, not striated, one nucleus
Neural regulation Smooth and skeletal muscles.
Action potential generated, calcium ions released into sarcoplasm, muscle
contracts
Electrical properties of Smooth muscle Spontaneous diffusion of Na and Ca ions causes depolarization, creates slow
waves between cells.
Not all or none
Stretching of smooth muscle can cause Delays of actions such as storage of food during digestion
Does skeletal or smooth muscle stretch more? Smooth
Hyperplasia Growth of more cells (number increases, not size). Smooth muscle
Sphincters Circular muscle found in digestive system, constricts body passages and relaxes
as required
Peristalis Smooth muscle, contraction along organs (rectum, urinary bladder, uterus)
Each skeletal muscle Individual organ. Contain one nerve, one artery, one+ veins
Smooth muscle contraction Need nerve to provide the stimulus. Not on own.
Connective tissue coverings (skeletal muscle) Endomysium, perimysium, epimysium. Become tendons/aponeurosis
Answers
Muscle tissue Excitable, contractable, extensive, elastic
Excitable Responsiveness, ability to receive/respond to stimuli
Contractible Ability to shorted when stimulated
Extensible Ability to be stretched or extended when relaxed
Elastic Ability to recoil after being stretched
Types of muscle tissue Skeletal, cardiac, smooth
Skeletal muscle Voluntary, striated, multi nucleated, attached to bones, orderly
Cardiac muscle Heart, striated, branched, involuntary
Smooth muscle Visceral, involuntary, not striated, one nucleus
Neural regulation Smooth and skeletal muscles.
Action potential generated, calcium ions released into sarcoplasm, muscle
contracts
Electrical properties of Smooth muscle Spontaneous diffusion of Na and Ca ions causes depolarization, creates slow
waves between cells.
Not all or none
Stretching of smooth muscle can cause Delays of actions such as storage of food during digestion
Does skeletal or smooth muscle stretch more? Smooth
Hyperplasia Growth of more cells (number increases, not size). Smooth muscle
Sphincters Circular muscle found in digestive system, constricts body passages and relaxes
as required
Peristalis Smooth muscle, contraction along organs (rectum, urinary bladder, uterus)
Each skeletal muscle Individual organ. Contain one nerve, one artery, one+ veins
Smooth muscle contraction Need nerve to provide the stimulus. Not on own.
Connective tissue coverings (skeletal muscle) Endomysium, perimysium, epimysium. Become tendons/aponeurosis
