Arms and hands attach arms to body latissimus dorsi

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Arms and hands Attach arms to body Latissimus Dorsi - Large, flat, triangular muscle covering lower back; extends arms away from body and rotates shoulder Pectoralis Major/Minor - muscles of chest that assist swinging of the arms Serratus Anterior - muscle of chest that assists breathing and raising of the arm Trapezius - rotates and controls swinging of the arm Shoulder and Arm Bicep - lifts forearm and flexes elbow
Cosmetology Theory Study Guide Hafsah Hussain Deltoid - Large, triangular muscle that allows arms to extend outward and side of body Tricep - large muscle that covers the entire back of upper arm and extends arm Extensors - straighten wrist, hand, and fingers to form line Flexor - flexing wrist Pronator - turns hand inward so palm is downward Supinator - rotates radius outward and palm upward Hand Abductors - separate fingers Adductors - draws fingers together Legs and feet Lower leg and foot Extensor Digitorum Longus -bends the foot up and extends foot Extensor Hallucis Longus - extends big toe and flexes foot Tibialis Anterior - covers front of shin; bends foot upward and inward Peroneus Longus - covers outside of calf; inverts foot and turns outward Peroneus Brevis - on lower surface of fibula; bends foot down and out Gastrocnemius -attached to lower rear surface of heel and pulls foot down Soleus - originates at upper portion of fibula and bends foot down Flexor digiti minimi - moves little toe Flexor digitorum Brevis - moves toes and helps maintain balance while walking and standing Abductor Hallucis - moves toes and helps maintain balance while walking and standing Abductor digiti minimi - separates toes Functions of Nervous and Circulatory Systems Nervous System Controls and coordinates all other systems of the body and makes them work harmoniously and efficiently. It is composed of the brain, spinal cord and nerves Circulatory System Controls steady circulation through the body by means of heart and blood vessels Atrium - upper, thin-walled chamber through which blood is pumped to the ventricles Ventricle - lower, thick-walled chamber that receives blood from atrium. Valves - temporarily close a passage to permit blood flow in only one direction BASIC CHEMISTRY OF PRODUCTS USED IN COSMETOLOGY purpose and effects of products and ingredients Volatile Alcohols - evaporate easily such as rubbing alcohol and hairspray Alkanolamines - neutralize acids or raise pH of many hair products Ammonia - colorless gas with a pungent odor that is composed of hydrogen and nitrogen; raises pH in hair products Glycerin - sweet, colorless, oily substance; used as solvent and moisturizer in cream Silicon - special type of oil used in hair conditioners, water-resistant lubricants for skin,
Cosmetology Theory Study Guide Hafsah Hussain and nail polish dryers Volatile Organic Compounds(VOCs) - contain carbon and evaporate very easily; used in nail polish and remover Thioglycolic acid

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