PPT-Muscles Part II MUSCLE CONTRACTIONS

Static Dynamic Isometric Isotonic Isokinetic Constant External Resistance Variable Resistance Plyometrics Muscle Contraction Static contractions The muscle tension or force exerted against an external load is equal to or weaker than the external force. More than 600 muscles in our bodies (about 650). Muscles make up approximately half of the human body’s weight. The human heart will beat . about 40 million times a year. , and . a person's heart will beat approximately 2.5 billion times by the time of their 70th birthday.. Muscles of girdles and appendages. Innervated by ventral ramus of spinal nerves. Key Point. What is a girdle?. What is a ramus/rami?. Appendicular Muscles - fish. Originated as extensions of hypaxials of body wall. By . Cheryl Hamilton. Contractions. A . contraction . is a shortened form of two words. .. An . apostrophe . is used to show where one or more letters have been left . out. .. Some . contractions are made by combining pronouns . Interesting Muscle Facts. Thirty facial muscles create looks like surprise, happiness, sadness, and frowning. Eye muscles are the busiest muscles in the body. Scientists estimate they may move more than 100,000 times a day. Part 2. Action Potential. Acetycholine. is released and . __________ . rushes into cell causing an electrical charge. Na. Muscles contract more forcefully after they have contracted a few times. . Dr. Ayisha Qureshi . Assistant Professor,. MBBS, MPhil. Location of the Heart:. The Pericardium & the Pericardial Sac: . The . heart is enclosed in the double-walled, membranous . pericardial sac . Muscles of Facial Expression. Muscles of Facial Expression. The muscles that promote facial expression lie just deep to the skin.. . Muscles of Facial Expression. The muscles that promote facial expression lie just deep to the skin.. masticatory. apparatus, including the skeletal components, the teeth and the . temporo-mandibular. joint.. The . masseter. muscle. The . masseter. muscle is a broad . multipemnnate. (bilateral symmetrical) muscle with . Slide Title. Slide Number. Osteology of Scapula. Slide 2. Summary of Back, Posterior Neck, and Posterior Head Dermatomes. Slide 3. Back Muscle Overview. Slide4. Extrinsic Back Muscles: Layers. Slide 5. 2012 Edition. Chapter 15:. Muscular System: Muscles, Tendons, Bursae and Ligaments. Muscles, Tendons, Bursae and Ligaments. Three body systems in ICD-10-PCS. K – Muscles. L – Tendons. M- Burase and Ligaments. Origin:. the immovable end of the muscle; attached to a relatively immovable bone. Insertion:. the end of the muscle attached to a movable bone. **When a muscle contracts, its insertion is pulled toward its origin.. Produce movement. Maintain posture. Stabilize joints. Generate heat. The Muscular System. Muscles are responsible for all types of body movement. Three basic muscle types are found in the body. Skeletal muscle. Deltoid. The muscle on the front of your upper arm. Biceps. Your chest muscles. Pectoralis. Major. Your stomach muscles (Abs). Rectus . Abdominus. The muscles on the side of your “core” – or “next to your abs”. Try using a heating pad, hot water bottle or warm pack to your lower abdomen or back for cramping or backache. Have someone give you a back rub or massage. Eat lightly. Take walks. Rest if yo