Muscle tissue on a Gross and Molecular level

Question 1

Skeletal Muscle:

Answer 1

1. Structure: 
A). Muscle Fibers:
    -bound by sarcolemma and supplied with a branch of one motor nerve
    -multinucleated
    -striated
    -unidirectional cell orientation
B). Myofibril:
    -over 1000/cell
    -sarcomere: repetitive subunits between z lines
C). Myofilament: 
    -thick protein=myosin
    -thin protein=actin (6:1 ratio)

Question 2

Cardiac muscle:

contractile rate influenced by circulating hormones and autonomic nervous system

Answer 2

A). muscle fibers:
    -mononucleated 
    -intercalated discs
    -striated
    -branching pattern
B). Myofibril:
    -linked together through intercalated discs 
C).Myofilaments:
    -similar to skeletal muscle

Question 3

Smooth muscle:

Answer 3

A). muscle spindles:
    -mononucleated
    -nonstriated
B). myofibrils: 
    -less orderly than skeletal muscle
C).myofilaments:
    -less myosin than skeletal muscle