PPT-Muscles

More than 600 muscles in our bodies about 650 Muscles make up approximately half of the human bodys weight The human heart will beat about 40 million times a year and a persons heart will beat approximately 25 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. Lower . Extremities. Muscles that Move…. The Lower Extremities:. The . Coxal. joint/thigh. Thigh muscles that move the knee joint/leg. Leg muscles. Intrinsic muscles of the foot. The Muscles of the . * move the forearm (elbow) . 1. . biceps . brachii. * L: anterior upper arm. * A: flexes elbow, . supinates. hand . 2. . brachialis. * L: medial upper arm. * A: flexes elbow. 3. . triceps . Objective. : To learn the structure and function of the Muscular System. Bell Work. : . Put the terms in the correct order from most simple to most complex: . SKELETAL MUSCLE. STRIATED MUSCLE CELL. MUSCULAR SYSTEM. What would life be like without . . Joints. Move a joint that you use often. . How do different joints move. Essential. . Question. 1. What role do joints play in the human body?. . Joints are the places where two bones meet and allow movement & flexibility and provides support to the human skeleton.. Human Body. Frontalis. – Elevates eyebrow. Orbicularis. . oculi. – Flexes eye. Zygomaticus. – Elevates lips. Orbicularis. . oris. – Flexes lips. Masseter. – Elevates mandible. Muscles of the Head/Face. 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. RECEPTORS AND EFFECTORS. SENSORY RECEPTORS. receptor. stimuli. sense. Photoreceptors. light. Eyes. Mechanoreceptors. Changes. in . movement. , . pressure. , . waves. , . sound. ,. . contact. , . pain. Muscles and Their Movements. Muscles move our bones which move our body. . Flexing: Creating less space at the joint. Extending: Creating more space at the joint. Muscles and Their Movements. Extending knee . Over 600 in the human body. Allow the skeleton to move. To cause movement, both ends of each muscle must be attached to bone. Origin or proximal attachment – the attachment closer to the center of the body. . 2.BONES. The framework of the human body is composed of 206 bones and it forms the skeletal system. This system has 5 major functions. The skeleton gives shape and support to your body. Bones protect your internal organs. Major muscles are attached to bone and help them move. Blood cells are formed in the center of the soft tissue called marrow. Finally, major quantities of calcium and phosphorous compound, which make bones hard, are stored in the skeleton.. Ppt. # 8. 10-. 2. Muscles of Facial Expression. muscles that insert in the dermis and subcutaneous tissues. tense the skin and produce facial expressions. innervated by facial nerve (CN VII). paralysis causes face to sag. 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.. Anterior and Posterior Trunk Muscles. Arm and Shoulder Muscles. 207-209. Table 6.3 Superficial Anterior Muscles of the Body (See Figure 6.22) (2 of 3).. Figure 6.17a . Muscles of the anterior trunk, shoulder, and arm..