Anatomy & Physiology I Lecture 10: The Muscular System Prof. Magidah Alaudi‚ M.Sc. malaudi@gmail.com The Structural and Functional Organization of Muscles • About 600 human skeletal muscles • Constitute about half of our body weight • Three kinds of muscle tissue – Skeletal‚ cardiac‚ smooth • Specialized for one major purpose – Converting the chemical energy in ATP into the mechanical energy of motion; Contraction and Movement • Myology—the study of the muscular system The Functions of Muscles
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the sternum and made up of bone. The False ribs is made of cartilage and connect to only the bottom of the true ribs. The floating ribs are made of cartilage and also only hold on the false ribs. 4. A man was in a car accident and fractured cervical vertebrae‚ his femur and his 5th metatarsal. Explain his injuries to a “non-science” person. The man in the accident broke the bones in the lower part of his vertebrate. He also broke his small toe and his thigh bone. 5. What are the main functions
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Muscle Description Muscles of the Head: Facial Expression Origin Insertion Action bipartite muscle‚ Epicranius:includes frontalis connected by galea & occipitalis aponeurotica covers forehead‚ no bony attachments galea aponeurotica skin of eyebrows and root of raises eyebrows (as in surprise); nose wrinkles forehead skin horizontally Occipitalis back of head occipital and temporal bones galea aponeurotica pulls scalp posteriorly Corrugator supercilii
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gelatinous‚ pulpy substance (jelly) Functional Moveable Segment -2 vertebrae -4 facets (2 facet joints‚ superior and inferior) -1 disc Facet Joints -Planar Joints (Each facet joint is a synovial joint) -Anterior glide with neck flexion -Posterior glide with neck extension (Superior segment moves on inferior segment—concave on convex‚ same direction) Orientation of the Facets -Cervical—sagittal plane (Flexion/Extension) -Rotation at C-spine is at C1 and C2 -Thoracic—Frontal plane
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t Actions * Flexion: decrease in joint angle from anatomical postion (bend elbow‚ flexing forearm) * Extension: return to anatomical position from flexion * Abduction: away from body * Adduction: return of body to anatomical position * Rotation: circular * Lateral: anterior surface to lateral side * Medial: anterior surface to medial side * Circumduction: conical shape * Protraction: horizontal movement in anterior direction (jaw forward) * Retraction:
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may have been injured and the lack of follow-up with these concerns is an ethical issue. Why was a social worker or child protective services not called to address the possibility of child abuse? Investigating how an eighth month old child fractured both femurs is needed to protect this child’s rights. Nurses’ have a responsibility and are governed by law to report suspected abuse to the proper authorities. A nurse should learn to apply the eight ethical principles of autonomy‚ beneficence‚
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Amanda’s leg to get to her femur to the medullary cavity would be starting with the epidermis of her skin‚ next I would proceed through her dermis layer of skin‚ followed by the hypodermis layer of skin. At that point after surgically cutting through the first three layers of skin I would be at her periosteum of compact bone‚ then after cutting through the periosteum into the compact bone I would be to the medullary cavity of Amanda’s femur bone. If we are
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Activity 1.2.2: Skeleton Scavenger Hunt Introduction Throughout the Human Body Systems course‚ you will explore the many functions of the skeletal system. Bones‚ cartilage‚ ligaments and tendons are all types of connective tissue that support your frame. The human skeleton is a wonder of design and engineering. It is incredibly strong and affords us great protection‚ but it is also incredibly light‚ giving us a great range of mobility. As you go on to explore the human body‚ knowledge of bone
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Review: Anatomy I Lab Chapter 1: Language of Anatomy What is anatomic position? - Human body is erect‚ with the feet only slightly apart‚ head and toes pointed forward‚ and arms hanging at the sides with palms facing forward. -two major divisions of human body surface are Axial‚ and Appendicular 2. Body orientation and direction. ~Superior- above ex. the nose is superior to the mouth ~Inferior- below ex. the abdomen is inferior to the chest ~Anterior- front ex
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Basketball is a game of profound athletic contrasts. There are graceful‚ even elegant‚ movements that appear to defy gravity‚ that occur in a larger context of physical contact between large‚ powerful athletes. Impact will often occur between players with little warning and at full speed‚ with the athletes’ bodies contorted in different angles at the point of impact. The nature of these athletic movements creates a wide variety of forces upon the basketball player’s body‚ which in turn creates an
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