Muscular system

Question 1

Three basic types muscle

Answer 1

-skeletal
-cardiac
-smooth

Question 2

Muscles are responsible for

Answer 2

-All movement of the body
-650 muscles in the human body

Question 3

Info on muscles

Answer 3

-only tissue able to contact
- creates movement by flexing and extending
-body energy converts

Question 4

Three types of muscles

Answer 4

Cardiac- branched, striated fiber with single nucleus and intercalated discs (together)

Skeletal- multi-nucleated, striated, cylindrical fibers

Smooth- elongated, spindle shaped fiber with single nucleus

Question 5

Skeletal muscle

Answer 5

-found in limbs
-striated, multi-nucleated
-voluntary

Question 6

Cardiac muscle

Answer 6

-found in heart
-striated, one nucleus
-involuntary

Question 7

Smooth muscle

Answer 7

-found in viscera
-not striated, one nucleus
-involuntary

Question 8

Characteristics of muscle

Answer 8

-skeletal/smooth muscle are elongated
- muscle cell = muscle fiber
-contraction = movement of microfilaments (protein fibers)
-all muscles share some terminology ( myo and mys - refers to muscle) (prefix sacro - refers to flesh)

Question 9

Shapes of muscle

Answer 9

Triangular- shoulder, neck
Spindle- arms, legs
Flat- diaphragm, forehead
Circular- mouth, anus

Question 10

Exercise and Muscles

Answer 10

Isotonic- muscle shorten and movement occurs (most normal exercise)
Isometric- tension in muscles increases, no movement occurs (pushing one hand against the other)

Question 11

How are muscles attached to the bone

Answer 11

-muscles are always attached to at least 2 points
-movement is attained due to a muscle moving an attached bone

Question 12

Origin

Answer 12

Attachment to a moveable bone

Question 13

Insertion

Answer 13

Attachment to a immoveable bone