HSCI 100 Lecture Notes - Lecture 8: Rigor Mortis, Phosphocreatine, Motor Protein
23 Feb 2017
School
Department
Course
Professor
Document Summary
L e c t u r e 8 : m u s c u l a r s y s t e m. Both i(cid:374)(cid:448)ol(cid:448)ed (cid:449)ith (cid:373)o(cid:448)e(cid:373)e(cid:374)t that allo(cid:449)s us to respo(cid:374)d to : stimuli, digestion of food, return of blood to the heart, moving air in/out of lungs. Both keep us upright and protects body parts. Bones store/release calcium: need for muscle contraction, blood clotting, nerve impulse conduction. 3 types of muscle tissue: smooth muscle characteristics, spindle-shaped, nonstriated, uninucleated fibers, wall of internal organs involuntary, cardiac muscle. Characteristics: striated, branched generally uninucleated, walls of heart involuntary, skeletal muscle. Characteristics: striated, tubular, multinucleated fibers, attached to skeleton, voluntary. Tendon -connective tissue that connects muscle to bone. Origin: attachment of a muscle on a stationary bone. Insertion: attachment of a muscle on a bone that moves. Synergistic: muscles that work in groups for a common action. The only force muscles exert is by pulling (contracting)
