### body part | organ | muscle:

Strong muscle
* Some strong muscles change shapes
  - connect valves
* are important in providing support to joints and can be built with exercise.
* can help prevent limitation of activities
  - prevent the most common causes of backaches
* close the blowhole before a whale dives underwater.
* control joint motion and stability.
* curl the skin tightly over their body.
* expand the mantle, drawing water into the mantle and over the gills.
* extend from the mandible to the skull.
* get shorter, while weak muscles lengthen.
* give the joints better stability while they are in motion.
* help support and protect joints affected by arthritis
  - that are weakened and damaged from arthritis
* protect joints from some bleeding episodes
  - the joint and decrease the chance of injury
* provide needed support, making movement easier and reducing pain.
* support the spine, therefore when muscles become stronger our posture improves.
* vibrate the drum membranes several times per second.

### body part | organ | muscle:

Stronger muscle
* absorb more impact and protect against injury in children and adolescents.
* appear to strengthen more than very weak ones.
* benefit people with arthritis because they help support and protect joints.
* can help improve joint health and reduce pain
  - provide better support for joints and can help prevent falls
* have many cells arranged in parallel like the jaw muscle.
* help prevent hernias
  - joint pain and facilitate erect posture
* lead to little or no urine loss for many women.
* move faster than weaker muscles.
* take up less space and burn more calories than fat tissue.
* use fewer fibers for the same task and therefore are easier to control.

Supinator
* is described as arising in conjunction with the extensor mass.
* usually have high arches.

Tense muscle
* add to the feeling of breathlessness, and they make the act of breathing harder.
* can actually squeeze off their own flow of energy and fuel.
* constrict the blood vessels and inhibit circulation.
* decrease flexibility and energy and increase pain and risk of injury.

Tensor
* are functions from vectors and one-forms to the real numbers, linear in all their arguments
  - variables
* have an associated rank from zero to infinity.

### body part | organ | muscle:

Tight muscle
* are a fact of life and they tighten faster and further with activities.
* are more forgiving when warm
  - likely to cramp than flexible muscles that have been stretched
  - susceptible to both acute muscle pull injuries, and overuse injuries
* can cause an imbalance in spinal movements.
* can lead to injury
  - tears, pulls and strains, even for fitness walkers
  - put pressure on nerves and blood vessels
* fight each other, pinch nerves, and pull bones out of line.
* obstruct the flow of energy into movement.
* produce chronic misalignment, stiffness, and often, pain.

Tired muscle
* are more prone to injury.
* start to stiffen during long rests.

Triceps
* control arm bicepses
* includes cell membranes
  - corpi
  - cytoplasm
  - lobes
  - myofibril
  - nuclei
  - plasma membranes
  - sections
  - vacuoles

Warm muscle
* are less likely to be injured when stretching
  - limber muscles, and keeping loose reduces the risk of injury and soreness
* are more elastic and responsive to flexibility exercises
  - pliable and less likely to tear than cold muscles, which contract sluggishly
  - resistant to injury
* respond best to stretching.
* stretch better and allow greater range of motion for the joints.

Weak muscle
* are a major contributor to the problem of tennis elbow.
* can lead to poor posture, aches and pains.
* don t support the joint properly and can lead to uneven wear.
* leave one susceptible to strains and sprains of the muscles, tendons, and ligaments.
* need oxygen.