Types of Muscle

Question 1

What are the three types of muscles?

Answer 1

involuntary, voluntary and cardiac muscle

Question 2

What is the voluntary muscle - or skeletal or striated?

Answer 2

you can choose to move
long, cylindrical cells - run parallel to each other
multi nucleate - lots of nuclei
striated - we can see bands of actin and myosin

e. g. bicep twitch - fast twitch
e. g. erecetor spiunae - posture - slow twitch

Question 3

What is the involuntary muscle or smooth muscle?

Answer 3

thin cells - looks like leaves
only have one nucleus per cell
slow twitch - respire aerobically - contract and relax slowly

e. g. control of pupil size
e. g. controls diameter of blood vessels - vasodilation

Question 4

What is the cardiac muscle?

Answer 4

branched muscle fibres - looks like peppa pig tunnel for rabbits
some banding - striation
uninucleate - one nucleus per cell
muscle fibres connected by intercalated discs
some striations
e.g. pumps bloog

myogenic - can contract on its own