Watching this resources will notify you when proposed changes or new versions are created so you can keep track of improvements that have been made.
Favoriting this resource allows you to save it in the “My Resources” tab of your account. There, you can easily access this resource later when you’re ready to customize it or assign it to your students.
The three types of muscle tissue are skeletal, smooth, and cardiac.
Differentiate between the structure and location of skeletal, smooth, and cardiac muscles
Skeletal muscles are attached to bones and allow voluntary movement of the body.
Smooth muscles, which generate involuntary movement, form part of the walls of the esophagus, stomach, intestines, bronchi, uterus, urethra, bladder, and blood vessels, among other portions of the body.
Cardiac muscle is involuntary and found only in the heart.
Skeletal muscle is striated in regular, parallel bundles of sarcomeres.
Cardiac muscle is striated, but the bundles are connected at branching, irregular angles called intercalated discs.
Skeletal muscle tissue is about 15% denser than fat tissue.
The striated and involuntary muscle of the vertebrate heart.
The girl is taking a walk, using her voluntary control of her skeletal muscles to move her body down the path. She decides to climb a hill and can feel the involuntary racing of her heart as she climbs the rugged slope. At the top of the hill, she takes a deep drink of water, which will eventually lead to an involuntary stretching of her bladder as she heads home.
Muscle tissue is a soft tissue, and is one of the four fundamental types of tissue present in animals. There are three types of muscle tissue recognized in vertebrates . Skeletal muscle, or voluntary muscle, is anchored to bone by tendons, or by aponeuroses at a few places, and is used to effect skeletal movement in activities such as locomotion and maintaining posture. Though this postural control is generally maintained as an unconscious reflex, the muscles responsible react to conscious control like non-postural muscles. An average adult male is made up of 42% of skeletal muscle and an average adult female is made up of 36%, expressed as a percentage of body mass.
Cardiac and skeletal muscle are both striated in appearance, while smooth muscle is not. Both cardiac and smooth muscle are involuntary while skeletal muscle is voluntary.
Cardiac and skeletal muscles are striated, in that they contain sarcomeres and are packed into highly regular, repeating arrangements of bundles; smooth muscle has neither attribute. While skeletal muscles are arranged in regular, parallel bundles, cardiac muscle connects at branching, irregular angles, calledintercalated discs. Striated muscle contracts and relaxes in short, intense bursts, whereas smooth muscle sustains longer or even near-permanent contractions.
The density of mammalian skeletal muscle tissue is about 1.06 kg/liter. This can be contrasted with the density of adipose tissue (fat), which is 0.9196 kg/liter. This makes muscle tissue approximately 15% denser than fat tissue.
striated, intercalated discs, found only in the heart, non-striated, within the walls of gastrolintestinal organs and blood vessels, non-striated, in arrector pili: controls erection of hair, and striated, 15% denser than fat, anchored to bones