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re Question 1 2/2 pts There are three types of muscle tissue found in the body. True False 4 Question 2 2/2 pts Smooth and cardiac muscle tissue are both under voluntary control. True « False Question 3 pal 2 pts The lumbar plexus is part of the central nervous system.True False False- this is a peripheral nerve Question 4 2/2 pts A motor signal is a signal that is sent from a muscle to the central nervous system. c True « False False- this is sensory input Question 5 2/2 pts The cervical plexus contains nerves that innervate the thigh. c True False Question 6 2/2 pts Answer the following short-answer question: Ligaments connect which types of tissue?Your Answer: Ligaments connect bone to bone. Connect bone to bone Question 11 10/10 pts Label the following five muscles: SQOmog Your Answer: B: Temporalis (L) C: Orbicularis Oculi (R)E: Zygomaticus Major G: Buccinator (deep) J: Depressor labii inferioris B: Temporalis C: Orbicularis oculi E: Zygomaticus majorG: Buccinator J: Depressor labii inferioris Question 12 10/10 pts Fill in the following muscle chart (10 blank spaces): Muscle Origin Insertion Action Innervation Flexor digitorum eee en 1. 25 superficialis _——— Pronator Teres —---—--- 3. 4, 6. Vastus Medialis 6 Te eee Peroneus Brevis 8. , _ 10. Question 13 2/2 pts Your patient sustained an injury to their facial nerve (CN VII). Which actions would beimpaired? c A. Extend head/neck c B. Compress cheeks C. Grin/grimace D. Elevate mandible E. A&D « F.B&C F.B &C (Buccinator & risorius) Question 14 2/2 pts Your patient is having difficulty when asked to bring his chin to his chest. He is also having difficulty turning his face from side to side. What muscle is most likely impaired? c Thyrohyoid © Semispinalis capitis o Splenius Capitis « Sternocleidomastoid (Bilateral neck flexion, unilateral turns face) c Scalenes Question 15 2/2 pts Your patient is having difficulty when asked to bend his spine backward. What muscle is involved? « Spinalis thoracis (Extensor of the vertebral column) c Scalenes c External oblique c Internal oblique c Quadriceps « Gastrocnemius °c Tibialis anterior Question 19 2/2 pts When gluteus maximus contracts, which bone is pulled posteriorly by this muscle? c Tibia lium Uina Femur Question 20 2/2 pts When extensor digitorum contracts, what action(s) occurs? c A. Elbow extension c B. Wrist extension c C. Extension of digit 1 c D. Extension of digits 2-5 c E. A&C F.B&D Question 21 2/2 pts Contraction of. results in, c obturator externus, spine flexion c obturator externus, spine extension « iliacus, hip flexion c iliacus, hip extension Ws 1. Which muscle is the prime mover of adduction, flexion and inward rotation of thehumerus? (specify letter on diagram with the name of the muscle for full credit) 2. Which muscle is innervated by the musculocutaneous nerve? (specify letter ondiagram with the name of the muscle for full credit) 3. What is the name of muscle C? 4. What is the innervation of muscle C? 5. What is the origin of muscle E?Your Answer: 1- B(Pectoralis Major)\ 2-ForG (Coracobrachialis)3- Supraspinatus 4- Suprascapular nerve 5- Inferior angle of scapula (Teres major) 1. B (Pectoralis Major) 2. F or G (Coracobrachialis) 3. Supraspinatus 4. Suprascapular nerve 5. Inferior angle of scapula (Teres major) Question 24 10/10 pts Use the figure to label the following six muscles: (Viewed posteriorly) TEMIOP Your Answer: A: Extensor carpi radialis longus, RC: Extensor digitorum D: Extensor carpi ulnaris F: Abductor pollicis longusH: Extensor indicis |: Extensor pollicis brevis A: Extensor carpi radialis longus Your Answer: A: Gastrocnemius B: Tibialis anterior C: Extensor digitorum longus G: Tibialis posterior H: Flexor digitorum longusl: Flexor hallucis longus A: Gastrocnemius B: Tibialis anterior C: Extensor digitorum longus G: Tibialis posterior H: Flexor digitorum longus I: Flexor hallucis longus Question 26 10/10 pts Answer the following essay question: Describe how acetylcholine, sodium ions and calcium ions work together to enable amuscle contraction. Your Answer: In order to happen a muscle contraction, firstly a nerve signal is a sent to the muscle fibers. And Acetylcholine releases from a motor nerve ending. Acetylcholine binds to themuscle cell and triggers the sodium channels to open and release sodium ions. Sodiumions go to the inside the cell and it will trigger an action potantial that eventually reachesthe sarcoplasmic reticulum. The presence of sodium causes calcium ions to be released. Calcium ions relase from sarcoplamic reticulum of muscle cell and make a muscle contraction to happen. Acetylcholine (a special chemical called a neurotransmitter) is released from a motor nerve at the neuromuscular junction (or NMJ). Acetylcholine binds to receptors on the muscle fiber that cause sodium channels to open. Sodium ions rush inside the cell, triggering an action potential which eventually reaches the sarcoplasmic reticulum. Calcium ions are released from the sarcoplasmic reticulum of the muscle cell, causing a muscle contraction to occur. Quiz Score: 100 out of 100 
