Muscles attached to scapula: Levator scapulae origin is transverse processes of C1-C4‚ insertion at superior angle of scapula‚ it moves scapula and flexes neck. Pectoralis minor’s origin is ribs 3-5 and insertion at coracoid process of scapula‚ it depresses scapula and elevates ribs. Rhomboids Major and Rhomboids Minor’s origin at spinous processes T1-T4‚ insertion at medial border of scapula‚ they move scapula. Serratus anterior’s origin is at ribs 1-9‚ insertion is at medial border of scapula
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Similarities and differences in the structure and function of the three types of muscle tissue and where they are found in the body: Skeletal – single‚ very long‚ cylindrical‚ multinucleated cells with very obvious striations‚ voluntary via nervous system controls‚ attach to bones for movement‚ slow to fast contractions Cardiac – branching chains of cells‚ uninucleated‚ striated‚ involuntary‚ found only in the heart‚ slow rhythmic contractions Smooth – single‚ fusiform‚ uninucleated‚ no striations
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Name: Dawn Jenkins Date: Dec.3‚ 2013 Instructor’s Name: Cara bianco Assignment: BIO125 Phase 2 Lab Report—The Muscular and Skeletal Systems INSTRUCTIONS: In this lab‚ you will be examining the structures and functions of the skeletal and muscular systems through Mr. Skeleton and Muscle Man. As you navigate your way through the systems‚ identify various parts by the corresponding letters. Part 1: Identify and list the names of the 4 types of bones in the lab. Each group of bones shown represents
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has been numbered for you. ___1____ 1. Acetylcholine is released by the axon terminal‚ diffuses to the muscle cell and attaches To ACh receptors on the sarcolemma. ________ 2. The action potential‚ carried into the cell via the T-tubules‚ causes the SR to release Calcium ions. ________ 3. Ach-E breaks down Ach‚ which separates from its receptors. ________ 4. The muscle cell relaxes and lengthens. ________ 5. The calcium ion concentration at the myofilaments increases; the
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Muscular Sys - Lt. mus - little mouse Body movement Maintain posture Generate heat Stabilize joints TYPES SKELETAL CARDIAC SMOOTH Elongated Branching Spindle-shpaed Multiple Peripheral N Single Central Single Central Nucleus Visible Visible Wala Striations Voluntary Involuntary Involuntary Hierarchy Bone → Tendon → Skeletal Muscle → Epimysium → Perimysium → Packs of Muscle Fibers → Endomysium → Muscle fibers → Sarcolemma → Myofibrils → Sarcomere → Actin & Mysoin myofilament ARRANGMENT OF MYOFILAMENTS
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feel pain‚ discomfort‚ hunger‚ or thirst but usually unaware of their workings Proprioceptors: Like interoceptors‚ respond to internal stimuli‚ however their location is restricted Respond to stretch in skeletal muscles‚ tendons‚ joints‚ ligaments‚ and connective tissue coverings of bones and muscles Inform brain of one’s movements depending on stretch of organs (3) Compare and contrast phasic and tonic adaptation. Be able to provide one example of a receptor for each. Phasic: Fast adapting Bursts
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CARDIOASCULAR & SKELETAL SYSTEMS Exercising has many long term benefits towards your body. The first one I am going to be writing about is the respiratory system. The respiratory system controls your breathing and begins when you draw in air through your nose or mouth. The air travels through your windpipe into both of your lungs‚ where small air sacs capture oxygen and distribute it in your bloodstream through small blood vessels called capillaries. Your diaphragm is the muscle the controls
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nasolabial fold) - paresis of the lower half of one side of the face - damage to upper motor neurons of the facial nerve. - The facial motor nucleus has dorsal and ventral divisions that contain lower motor neurons supplying the muscles of the upper and lower face‚ respectively. The dorsal division receives bilateral upper motor neuron input (i.e. from both sides of the brain) while the ventral division receives only contralateral input (i.e. from the opposite side of the brain)
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Understanding Words * acetabul-: vinegar cup * adip-: fat * aer-: air * alb-: white * an-: without * ana-: up * anul-: ring * Apo-: away from * Append-: “to hang something”; * arth-: joint * Astr-: starlike * aud-: to hear * Ax-: axle * ax-: axis * Bi-: two * Bio-: life * blast: bud * burs-: bag‚ purse * calat-: something inserted * canal-: channel * Cardi-: referring to the heart * carp-: wrist
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Muscle contractions tend to be smooth and vary in strengths‚ depending on the demands placed on them. The variations of strength are called graded muscle responses. There are two ways a muscle contraction can be graded‚ either by changing the frequency of stimulation or by changing the strength of the stimulation. When a muscle is responding to a change in stimulus frequency‚ the nervous system will reach a greater muscular force when increasing the firing of motor neurons. This causes a wave or
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