The muscular system Flashcards
What are the 3 functions of muscle?
Movement, maintaining posture and heat generation.
What are the 3 types of muscles and indicate whether they are under voluntary or involuntary control?
Skeletal - voluntary
Cardiac - involuntary
Smooth - involuntary
When referring to muscles what do voluntary and involuntary mean?
Voluntary means that the muscle is under conscious control
Involuntary means that the muscle is not under conscious control
How do muscles work?
When a muscle contracts every cell in that muscle shortens. When a muscle relaxes every cell in that muscle lengthens.
How do muscles generate heat?
They undergo spasmodic contractions that generate heat. Also known as shivering. Not under voluntary control.
What muscles do we use for intramuscular injections in dogs and cats?
Quadriceps, Lumbar,Triceps, Semimembranosus/semitendinosus
What are the unique characteristics of cardiac muscle?
Cells contract spontaneously with no external stimulation. Groups of cells contract at the rate of the most rapid cell in the group.
