Portage Learning: A&P 1 Module 5. All Questions and answers. Graded A+

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Brachialis (Insertion) - Ans-Tuberosity of ulna Name the three types of muscle tissue found in the body: - Ans-Cardiac, skeletal and smooth What does it mean that skeletal muscles are under cons... cious control? - Ans-A person can consciously decide to use these muscles to complete an action. What is included in the central nervous system? - Ans-Brain and spinal cord Describe a motor action vs. sensory input in terms of the nervous system. - Ans-Messages from the central nervous system to a muscle are called a motor actions. Nerves also carry information from the external environment to the central nervous system, called sensation or sensory input. True or false: The brachial plexus supplies nerves to the lower extremities. - Ans-False Describe the difference between tendons and ligaments. - Ans-Tendons are connective tissues that connect skeletal muscle to bone at each end. Ligaments are connective tissue that connects bone to bone, helping to stabilize joints where bones meet. Describe the origin and insertion of attachment to bones. - Ans-The origin is the bony site of attachment which is stationary during the movement. The insertion of a muscle is the bony site of attachment that is moved by the muscle contraction. Describe muscle action and innervation. - Ans-The action of the muscle is what effect is produced by the muscle's contraction. The innervation is the peripheral nerve that supplies a muscle with the message from the brain. Orbicularis oculi (Action) - Ans-eye closure Orbicularis oculi (Innervation) - Ans-facial nerve (CN VII) Buccinator (Action) - Ans-compresses cheek Buccinator (innervation) - Ans-facial nerve (CN VII) Temporalis (Action) - Ans-Elevates mandible, closes jaw Temporalis (Innervation) - Ans-Trigeminal nerve (CN V, mandibular branch) Sternocleidomastoid (Origin) - Ans-Sternal end of clavicle and manubrium Sternocleidomastoid (Insertion) - Ans-Mastoid region of skull Sternocleidomastoid (Action) - Ans-Bilateral: Neck flexion Unilateral: Turns face to opposite side Sternocleidomastoid (Innervation) - Ans-Accessory nerve (CN XI) Longissimus thoracis (Origin) - Ans-Transverse process of inferior thoracic, superior lumbar vertebrae Longissimus thoracis (Insertion) - Ans-Transverse process of middle and superior cervical vertebrae Longissimus thoracis (Action) - Ans-Bilateral extend head Unilateral laterally flexes neck to same side Longissimus thoracis (Innervation) - Ans-thoracic and lumbar spinal nerves Spinalis (Action) - Ans-extensor of the vertebral column Rectus abdominis (Origin) - Ans-Pubic Crest, pubic symphysis Rectus abdominis (Insertion) - Ans-Pubis, cartilages of ribs 5-7, xiphoid process Rectus abdominis (Action) - Ans-Flexion of spine, compression of abdominal viscera Rectus abdominis (Innervation) - Ans-Spinal nerves (T 7-T 12) Transverse abdominis (Origin) - Ans-Lateral inguinal ligament, inner iliac crest Transverse abdominis (Insertion) - Ans-Linea alba, pubis Transverse abdominis (Action) - Ans-Compression of abdomen Transverse abdominis (Innervation) - Ans-First lumbar nerve (T 7- L1), iliohypogastric (T12-L1), ilioinguinal (T12-L1) Diaphragm (Origin) - Ans-Cartilage of ribs 7-12, xiphoid process, lumbar vertebrae Diaphragm (Insertion) - Ans-Anterior longitudinal ligament (vertebral column) Diaphragm (Action) - Ans-Expands thoracic cavity, compresses abdominal cavity Diaphragm (Innervation) - Ans-Phrenic nerve (C3-5) Frontalis - Ans-raises eyebrows, wrinkles forehead [Show More]

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