The Muscular System

Smooth, cardiac, connective

Smooth, nervous, skeletal

Cardiac, epithelial, skeletal

Smooth, skeletal, cardiac

Cardiac muscle

Smooth muscle

Skeletal muscle

Connective tissue

Single nucleus

Striated appearance

Branched fibers

Voluntary control

Skeletal muscle tissue

Cardiac muscle tissue

Smooth muscle tissue

Connective tissue

Many nuclei, no striations, fibers grouped in tendons

Single nucleus, no striations, fibers grouped in bundles

Many nuclei, striations, fibers grouped in fascicles

Single nucleus, striations, fibers grouped in fascicles

The arrangement of actin and myosin in bands

The presence of collagen fibers

The number of nuclei in each cell

The attachment to bones

Skeletal muscles are attached to bones by tendons and stretch across joints to enable movement.

Skeletal muscles are attached to bones by ligaments and do not cross joints because the space is too wide.

Skeletal muscles are attached to the inner bone marrow by collagen.

Skeletal muscles are not involved in the movement of bones. That function is performed by tendons

It's the only thing that protects our organs.

It helps us digest food only.

It helps us move, maintain posture, and produce heat.

It is not important for our survival.

Origin is where the muscle attaches to the stationary bone, and insertion is where it attaches to the moving bone.

Origin is where the muscle attaches to the moving bone, and insertion is where it attaches to the stationary bone.

Origin and insertion are both points where the muscle attaches to the same bone. The difference between them is not actually the location.

Origin is the point where the muscle contracts, and insertion is where it relaxes. That's the only difference.

Skeletal muscles are under voluntary control, while other types are not.

Skeletal muscles are found only in the heart.

Skeletal muscles do not help in movement.

While we cannot control skeletal muscles, the other two muscle types are under our conscious control.