Lecture 3.2 - Tissue and Cellular Organization of Muscle

What does myo mean?

Muscle

What are muscle cells called?

Fibers

Multinucleate definition

Arises from fusion of myoblasts

Hyperplasia

Increase in cell numbers

Hypertrophy

Increase in cell size

The connective tissue in the muscle transmits…

The force the muscle produces to where it attaches

When muscles contract it…

shortens

What is the fascia?

A web/network of connective tissue that’s spread out through the body.

What are the two major proteins that build the fascia?

Collagen and Elastin

What happens to the facsia when you are moving around?

It goes between a liquid and a solid, also known as a liquid crystal.

What are the three units of Subcellular Organization?

1) Conduction of the electrical signals

2) Control of the muscle contraction.

3) Contraction

What are the structural proteins?

a-actinin, nebulin, titin, dystrophin, and myomesin

What are the contractile proteins?

Actin and myosin

What are the regulatory proteins?

Troponin and Tropomyosin

What are the three muscle proteins called?

Structural, contractile, and regulatory proteins.