A&P 1/ BIOD 151 Module 5 Exam Questions and Answers solutions (100% correct) | Portage Learning

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M5: Exam- Requires Respondus LockDown Browser There are three types of muscle tissue found in the body. True False Smooth and cardiac muscle tissue are both under voluntary control. ... True False The lumbar plexus is part of the central nervous system. True False False- this is a peripheral nerve A motor signal is a signal that is sent from a muscle to the central nervous system. True False False- this is sensory input The cervical plexus contains nerves that innervate the thigh. True False Answer the following short-answer question: Ligaments connect which types of tissue? Your Answer: Ligaments connect bone to bone. Connect bone to bone Answer the following short-answer question: Acetylcholine is what type of substance? Your Answer: Neurotransmitter. Neurotransmitter Answer the following short-answer question: During a muscle contraction which protein myofilament is pulled along? Your Answer: Actin. Actin Answer the following short-answer question: What is the name of the thin myofilament? Your Answer: Actin. Actin Answer the following short-answer question: What must occur for a muscle contraction to stop? Your Answer: When nerve impulses no longer stimulate the muscle fiber, contraction stops. Calcium ions return to sarcoplasmic reticulum and the muscle can relax. Calcium ions must be pumped back into the sarcoplasmic reticulum Label the following five muscles: B: C: E: G: J: 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 major G: Buccinator J: Depressor labii inferioris Fill in the following muscle chart (10 blank spaces): Muscle Origin Insertion Action Innervation Flexor digitorum superficialis ------- ---------- 1. 2. Pronator Teres ------- 3. 4. 5. Vastus Medialis 6. ---------- 7. -------------- Peroneus Brevis 8. 9. ----------- 10. 1. [answer1] 2. [answer2] 3. [answer3] 4. [answer4] 5. [answer5] 6. [answer6] 7. [answer7] 8. [answer8] 9. [answer9] 10. [answer10] Your Answer: 1- Flexion of the wrist and digits 2-5 (middle and proximal phalanx) 2- Median nerve 3-Mid-lateral surface of radius 4- Pronation 5- Median nerve 6- Intertrochanteric line of femur 7- Knee extension 8- Lateral, distal fibula 9- Lateral side of 5th metatarsal 10- Superficial peroneal nerve 1. Flexion of the wrist and digits 2-5 2. Median nerve 3. Mid-lateral surface of radius 4. Pronation 5. Median nerve 6. Intertrochanteric line of femur 7. Knee extension 8. Lateral, distal fibula 9. Lateral side of 5th metatarsal 10. Superficial peroneal nerve Your patient sustained an injury to their facial nerve (CN VII). Which actions would be impaired? A. Extend head/neck B. Compress cheeks C. Grin/grimace D. Elevate mandible E. A&D F. B&C F.B &C (Buccinator & risorius) 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? Thyrohyoid Semispinalis capitis Splenius Capitis Sternocleidomastoid (Bilateral neck flexion, unilateral turns face) Scalenes Your patient is having difficulty when asked to bend his spine backward. What muscle is involved? Spinalis thoracis (Extensor of the vertebral column) Scalenes External oblique Internal oblique Rectus abdominis True or False: When a muscle contracts, the Z lines within a sarcomere come closer together towards the M line. True False True or False: The A band contains thin filaments. True (A band contains thick filaments and thin filaments) False Which muscle contracts to enable the main effort required to stand on your toes? Biceps femoris Quadriceps Gastrocnemius Tibialis anterior When gluteus maximus contracts, which bone is pulled posteriorly by this muscle? Tibia Ilium Ulna Femur When extensor digitorum contracts, what action(s) occurs? A. Elbow extension B. Wrist extension C. Extension of digit 1 D. Extension of digits 2-5 E. A&C F. B&D Contraction of results in ? obturator externus, spine flexion obturator externus, spine extension iliacus, hip flexion iliacus, hip extension When piriformis contracts, what action(s) will not occur at the hip? A. Internal rotation B. Lateral rotation C. Adduction D. Flexion E. Extension F. A&D G. B&E Use the figure answer the following five questions: 1. Which muscle is the prime mover of adduction, flexion and inward rotation of the humerus? (specify letter on diagram with the name of the muscle for full credit) 2. Which muscle is innervated by the musculocutaneous nerve? (specify letter on diagram 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- F or G (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) Use the figure to label the following six muscles: (Viewed posteriorly) A: C: D: F: H: I: Your Answer: A: Extensor carpi radialis longus, R C: Extensor digitorum D: Extensor carpi ulnaris F: Abductor pollicis longus H: Extensor indicis I: Extensor pollicis brevis A: Extensor carpi radialis longus C: Extensor digitorum D: Extensor Carpi Ulnaris F: Abductor pollicis longus H: Extensor indicis I: Extensor pollicis brevis Use the figure to label the following six muscles: A: B: C: G: H: I: Your Answer: A: Gastrocnemius B: Tibialis anterior C: Extensor digitorum longus G: Tibialis posterior H: Flexor digitorum longus I: Flexor hallucis longus A: Gastrocnemius B: Tibialis anterior C: Extensor digitorum longus G: Tibialis posterior H: Flexor digitorum longus I: Flexor hallucis longus Answer the following essay question: Describe how acetylcholine, sodium ions and calcium ions work together to enable a muscle 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 the muscle cell and triggers the sodium channels to open and release sodium ions. Sodium ions go to the inside the cell and it will trigger an action potantial that eventually reaches the 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 [Show More]

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