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Muscular System (3 types of muscle tissues & their major…

- - - - the 3 types of muscle tissue are cardiac, smooth, and skeletal. Cardiac musclecells are located in the walls of the heart, appear striated, and are under involuntary control. ... Skeletal muscle fibers occur in muscles which are attached to the skeleton. They are striated in appearance and are under voluntary controltext
      - Skeletal muscle has four major functions, these are: 1. Force generation for movement: Skeletal muscle is responsible for generating the force needed to move the body. Walking, running, swimming, pushing, pulling etc are all movements created by the contraction of skeletal muscles.
- - - - Mobility. The muscular system's main function is to allow movement. .
      - Stability. Muscle tendons stretch over joints and contribute to joint stability. .
      - Posture.
      - Circulation.
      - Respiration.
      - Digestion.
      - Urination.
      - Childbirth.
  - - - Movement. attaches to bones to provide movement.
      - Heat and Energy. produces heat and energy for the body.
      - Posture. maintains posture.
      - Protection. protects internal organs.
- - - - Abduction is movement away from the center, as spreading the toes or fingers apart
        
        Adduction is movement toward the midline of the body, as bringing the fingers and toes together.
        
        Angular motion is comprised of flexion, extension, adduction, and abduction
  - - - Flexion and Extension. Flexion and extension are movements that take place within the sagittal plane and involve anterior or posterior movements of the body or limbs.
      - Abduction and Adduction. ...
      - Circumduction.
      - Rotation. ...
      - Supination and Pronation.
      - Dorsiflexion and Plantar Flexion.
      - Inversion and Eversion. .
      - Protraction and Retraction
- - - - Movement. attaches to bones to provide movement.
      - Heat and Energy. produces heat and energy for the body.
      - Posture. maintains posture.
      - Protection. protects internal organs
  - - - sarcolemma. cell membrane of muscle fiber.
        
        sarcoplasm. cytoplasm of muscle fiber.
        
        mitochondria. MANY per cell; energy producers.
        
        myofibrils. thread-like, contractile fibers, parallel to each other, many per cell; myosin= thick & actin= thin.
        
        sarcomere. ...
        
        sarcoplasmic reticulum. ...
        
        transverse tubules.