Muscular System Ch.8 Sec.5-8

Front 1

Describe the smooth muscle cells.

Back 1

Elongated with tapered ends

Front 2

Are smooth muscle cells voluntary or involuntary?

Back 2

involuntary

Front 3

There are two types of smooth muscle: multi unit and visceral.

In ? smooth muscle, such as in the blood vessels and iris of the eye, fibers occur seperately rather than as sheets.

Back 3

Multi unit

Front 4

? smooth muscle occurs in sheets and is focused in the walls of hollow organs; these fibers can stimulate one another and display rhythmicity, and are thus responsible for peristalsis in hollow organs and tubes.

Back 4

Visceral

Front 5

How is smooth muscle contraction like skeletal muscle?

Back 5

Reactions of actin and myosine, trigered by membrane impulses, and an increase incalcium ions, use energy from ATP

Front 6

How many neurotransmitters are there that act on smooth muscle?

Back 6

2

Front 7

How is it unlike skeletal muscle?

Back 7

Slower to contract and relax, maintains a forceful contraction longer with a given amount of ATP. Muscle fibers can change length wihout changing tauntness

Front 8

Describe cardiac muscle cells.

Back 8

Found only in heart, composed of striated cells, joined end to end.

Front 9

How is cardiac muscle contraction like skeletal muscle contraction?

Back 9

Contains many filaments of actin and myosin

Front 10

What are the three ways cardiac muscle contraction differs from skeletal muscle contraction?

Back 10

Less well developed muscle fibers, store less calcium, larger transverse tubules.

Front 11

Tge immovable end of a muscle is the ? , while the movable end is the ? .

Back 11

origin

insertion

Front 12

What does contraction do?

Back 12

Insertion is pulled toward origin.

Front 13

What connects the rib cage and vertabral column to the pelvic girdle?

Back 13

muscles of the abdominal wall

Front 14

A band of tough connective tissue called the ? , extends from the xiphoid process to the symphysis pubis and serves as an attachment for certain abdominal wall muscles?

These muscles include external oblique, internal oblique, transverse abdominis, and rectus abdominis.

Back 14

linea alba