Structure of Muscle Tissue Flashcards
What are the 3 types of muscle tissue
Smooth
Cardiac
Skeletal
What are the roles of skeletal muscles
Movement - contraction
Support
Posture
Sphincter control
Temp control - shivering
What are the roles of smooth muscles
Movement along GI tract - peristalsis
Regulation of blood flow
What are the role of cardiac muscles
Regulation of blood flow - pumps blood
What kind of control is skeletal muscle under
Voluntary control
What is the appearance of skeletal muscles described as
Straited
How are most skeletal muscles attached to bones
Tendons
What the difference between skeletal and smooth/cardiac muscle in terms of nerve impulses
Skeletal cells aren’t electrically connect so receive impulse individually
What are the cells, organelles in skeletal muscle
Cell: muscle fibre
Organelles: myofibrils
What is the order of structure of skeletal muscles
Myofilaments
Myofibrils
Muscle fibre
Fascicles
Muscle
Where can smooth muscle be found
GI tract walls
Blood vessel walls
Walls of uterus
What type of control is smooth muscle
Involuntary
What is smooth muscles stimulated by
Autonomic system
Hormone
IN response to stretch
Where is ATP mostly from in smooth muscles
Oxidative phosphorylation
How is the structure of cardiac muscles described
Striated
Branched
Intercalated discs
What are intercalated discs
Part of sarcolemma that contains gap junctions and desmosomes
What do gap junctions do
Channels between adjacent cardiac muscle fibre that allows depolarisation - allow quick transmission of AP
What do desmosomes do
Anchors the end of cardiac muscle fibres together so cells don’t pull apart during contraction
