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Human Anatomy and Physiology Lab #8 Muscle Physiology . Miriah Mertell. Muscle Identification Review. External oblique . Palmaris longus. Muscle Identification Review. Flexor hallucis longus Origin : Posterior tibia Insertion : Distal phalanx of great toe
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Human Anatomy and Physiology Lab#8Muscle Physiology Miriah Mertell
Muscle Identification Review External oblique Palmaris longus
Muscle Identification Review Flexor hallucis longus Origin : Posterior tibia Insertion : Distal phalanx of great toe Action : Flexes great toe; plantar flexes and inverts foot; the “push-off muscle” during walking Gluteus medius
The Motor Unit Multiple motor unit recruitment
Muscle Contraction Isotonic Isometric
Muscle Fatigue • Inability of muscle to maintain force of contraction after prolonged activity • Could be a result of: • Inadequate release of calcium ions from the SR • Insufficient oxygen • Depletion of glycogen and other nutrients
Exam Next Week • 60 – 70 % Identification • Be able to identify muscles on muscle chart as well as origin, insertion and action of those listed on syllabus • Mainly use lab book and muscle list to study for identification
Due today: Lab manual: Ex. 13: Activity 3 (#’s 1 & 2), Activity 4 (#’s 1 & 2). Due online: • PowerPhys experiments: Twitch Contractions and Summation, and Recruitment and contractions. • The activity links are located on the assignment tab on WileyPlus (As you complete each experiment, save the lab report file as a PDF. Then, submit both PDF files to the eCourseware dropbox labeled-PowerPhys lab 7.) • Real Anatomy: muscular is due by Thursday at 11:59 pm. (Access the Real anatomy activity on the assignment tab in WileyPlus.)