Chapter 4 - Muscle Tissue Flashcards
Skeletal Muscle Tissue Characteristics
Striated
Multinucleated
Voluntary
Long, cylindrical cells
Skeletal Muscle Function
Responsible for voluntary movements like lifting, walking, facial expressions
Skeletal Muscle Location
Attached to bone, skin(facial muscles), voluntary sphincters like lips, urethra, anus
Cardiac Muscle Tissue Characteristics
Striated
Branched cells
Cells are short
Involuntary
One or two nuclei
Intercalated discs
Cardiac Muscle Function
Involuntary contraction of the heart, pumps blood throughout the circulatory system
Can generate their own action potentials
Cardiac Muscle Location
Heart wall (myocardium)
Smooth Muscle Tissue Characteristics
Non-striated
Spindle shaped cells
One centrally placed nucleus
Involuntary
Arranged in layers
Smooth Muscle Function
Involuntary movements
Control of internal organs like the movement of food or urine
Smooth Muscle Location
Walls of hollow internal organs like vessels, airways, stomach, bladder, uterus