Name: Nicole Placido 09/08/23
Anatomy and Physiology Ma’am Josephine Aldaba
ACTIVITY # 2
1) Throwing a baseball Overhead
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Pectoralis Major
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Action: Adduction, or depression, of the arm (in opposition to the ac-Hon of the deltoideus muscle) and rotation of the arm forward about the axis of the body.
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Innervation: dual motor innervation by the medial pectoral nerve & lateral pectoral nerve
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Deltoid
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Action: Arm abduction, Hexion, extension. The muscle has a wide origin spanning the clavicle, acromion and spine of scapula
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Innervation: Axillary Nerve
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2.) Kicking a ball
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Rectus Femoris
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Action: extending the knee, exhibits. additional actions since it crosses both the hip a knee joints
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Innecuation: Femoral Nerve
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Biceps Femoris
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Action: Allows for thigh extension and external rotation
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Innervation: sciatic Nerve, Tibial Nerve
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3.) Doing sit-ups
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Rectus Abdominis
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Action Flexion of the trunk (thoracic and lumbar spine). Tense the anterior wall of the abdomen & assist in compressing the contents of the abdomen.
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Innervation: Thoracoabdominal Nerves
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Transversus Abdominis
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Action: Maintain abdominal tension and support abdominal viscera. Increase intraabdominal pressure that is helpful in forceful expiration, coughing, defecation.
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Innervation: Intercostal Nerves, Subcostal Nerve, Iliohypogastric Nerve, and Ilioinguinal Nerves
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4.) Breathing
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Diaphragm
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Action Increases vertical dimension of thoracic cavity, resulting in inha-ration. Exhalation
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Innervation: Phrenic Nerves
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Internal Intercostals.
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Action: contraction draws adjacent ribs together to further decrease anteroposterior 8 lateral dimensions of thoracic cavity during forced exhalation,
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Innervation: Thoracic spinal Nerves
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REFERENCE:
Tortora, G.J. and Derrickson, B. (2017) Principles of anatomy and physiology. Danvers, MA: Wiley Custom Learning Solutions.