Flashcards in Set 20 Muscle Physiology Deck (26):
What is the sarcolemma?
cell membrane in muscle
What is the sarcoplasmic reticulum?
stores Ca++ to be released in skeletal muscle
What are the T-tubules?
sends AP to release calcium from the sarcoplasmic reticulum
What is a myofibril?
actin and myosin (2:1)
What is myosin?
thick fibril, H zone, myosin head attaches to ATPase
What is actin?
thin fibril, F-actin filament + tropomyosin +troponin = I bands
Where are the binding sites on actin?
What covers the F actin's binding sites?
What binds calcium and moves tropomyosin off binding sites?
What is needed for smooth muscle contraction?
What is a sarcomere?
z line to z line
What is the A band?
actin and myosin
What is the H band?
What is the I band?
joint movement and constant weight
joint movement and constant weight/speed
single motor neuron and fibers it supplies
What determines the strength of a muscle?
# of fibers recruited
What is ascites?
Where are fats digested?