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Chelsey Lara

A&P week 1-5

TermDefinition
What are the levels of structural organization in the human body (from simplest to most complex) Chemical - Cellular - Tissue - Organ - System - Organism
Define Homeostasis The body's ability to maintain a stable internal environment despite external changes.
What is the anatomical position? Standing erect, facing forward, arms at sides, palms facing forward.
What is the difference between anterior and posterior? Anterior refers to the front of the body; posterior refers to the back.
What are the three types of muscle tissue? Skeletal, smooth, and cardiac muscle.
What is the function of skeletal muscle? To produce movement, maintain posture, and generate heat.
What connective tissue layer surrounds individual muscle fibers? Endomysium.
What is the role of the sarcomere in muscle contraction? It is the functional unit of a muscle fiber where actin and myosin filaments slide past each other to cause contraction.
What does the term “origin” refer to in muscle anatomy? The point of muscle attachment that remains stationary during contraction.
What is the difference between a tendon and an aponeurosis? A tendon connects muscle to bone; an aponeurosis is a flat, broad sheet of connective tissue connecting muscles to each other or to bones.
What is the function of the deltoid muscle? Abducts the arm at the shoulder joint.
Define fascia. A fibrous connective tissue that surrounds and separates muscles and other internal organs.
What is the difference between agonist and antagonist muscles? The agonist is the prime mover; the antagonist opposes the action of the agonist.
What does “bipennate” describe in muscle structure? A muscle with fascicles arranged on both sides of a tendon.
What is muscle tone? A state of partial contraction that maintains posture and readiness for action.
Created by: chelseylara
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