9.1: There are three types of muscle tissue

The prefix myo and mys mean

muscle

What does neural control allow the heart to do ?

speed up for brief periods

Describe stabilize joints in muscle function

Even as they pull on bones to cause movement, they strengthen and stabilize the joints of the skeleton.

What enables muscle tissue to perform duties ?

Excitability (responsiveness), contractility, extensibility, and elasticity

Explain the ability of contraction in skeletal muscle

It can contract rapidly, but it tires easily and must rest after short periods of activity

Describe generate heat in muscle function

Muscles generate heat as they contract, which plays a role in maintaining normal body temperature.

Deine Muscle Fibers

Skeletal and smooth muscle cells (but not cardiac muscle cells) are elongated,

Describe produce movement in muscle function

Skeletal muscles are responsible for all locomotion and manipulation. They enable you to respond quickly to jump out of the way of a car, direct your eyes, and smile or frown.

True or False Cardiac muscle tissue can and does contract without being stimulated by the nervous system.

True

True or False Skeletal muscle is also remarkably adaptable.

True

True or False Cardiac muscle usually contracts at a fairly steady rate set by the heart's pacemaker.

True

Describe maintain posture and body position in muscle function

We are rarely aware of the skeletal muscles that maintain body posture. Yet these muscles function almost continuously, making one tiny adjustment after another to counteract the never-ending downward pull of gravity.

How does blood course through the body

because of the rhythmically beating cardiac muscle of your heart and the smooth muscle in the walls of your blood vessels, which helps maintain blood pressure.

Three key words to remember when discussing cardiac muscle tissue

cardiac, striated, and involuntary

The prefixes sacro means

flesh reference to muscle

What is the role of smooth muscle tissue?

force fluids and other substances through internal body channels

How does smooth muscle tissue regulate the passage of substances through internal body openings?

forms valves

Smooth muscle tissue forms the arrector pili muscles attached to ___

hair follicles

Is cardiac muscle voluntary or involuntary?

involuntary

Where is smooth muscle tissue located?

is found in the walls of hollow visceral organs, such as the stomach, urinary bladder, and respiratory passages.

Describe excitability of muscle tissue

is the ability of a cell to receive and respond to a stimulus by changing its membrane potential.

Describe elasticity of muscle tissue?

is the ability of a muscle cell to recoil and resume its resting length after stretching

Describe extensibility of muscle tissue?

is the ability to extend or stretch. Muscle cells shorten when contracting, but they can be stretched, even beyond their resting length, when relaxed

Example of excitability of muscle tissue?

neurotransmitter released by a nerve cell

What kind of control does skeletal muscle have ?

often activated by reflexes, voluntary muscle because it is the only type subject to conscious control.

Where is cardiac muscle tissue located ?

only in the heart, where it constitutes the bulk of the heart walls.

What locomotion is the skeletal muscle responsible for ?

overall body mobility

What are the four important functions of the body that muscles perform

produce movement, maintain posture and body position, stabilize joints, and generate heat

Smooth muscle tissue dilate and constricts _______

pupils of eye

______ longest muscle cells and have obvious stripes called striations

skeletal muscle fibers

What tissue is packaged into the skeletal muscles organs that attach to and cover the skeleton.

skeletal muscle tissue

When you think of skeletal muscle what three words are key

skeletal, striated, and voluntary

Describe contractility of muscle tissue?

the ability to shorten forcibly when adequately stimulated. This ability sets muscle apart from all other tissue types

Smooth muscle in organs of the digestive, urinary, and reproductive tracts propels substances through ________

the organs and along the tract.

Key words to remember when discussing smooth muscle tissue ?

visceral, nonstriated, and involuntary