Portage A&P1 Module 5 Exam.docx

There are five types of muscle tissue found in the body - correct answer False (Only 3) `Smooth and cardiac muscle tissue are both under voluntary control. - correct answer False The lumbar plexus is part of the central nervous system - correct answer False (This is a peripheral nerve) A sensory signal is a signal that is sent from a muscle to the central nervous system. - correct answer True The lumbar plexus contains nerves that innervate the thigh. - correct answer True Ligaments connect which types of tissue? - correct answer Connect bone to bone Aceytlcholine is what type of substance? - correct answer Neurotransmitter During a muscle contraction which protein myofilament contains cross-bridges? - correct answer Myosin What is the name of the thick myofilament? - correct answer Myosin The return of calcium ions into the sarcoplasmic reticulum causes what to occur? - correct answer Muscle relaxation (muscle contraction stops) Identify the muscle and its innervation highlighted in the figure below. - correct answer Answer: Zygomaticus major Innervation: Facial Neve (CN VII) Identify the muscle and its bilateral action highlighted in the figure below. Be as specific as possible in your response. - correct answer Longissimus thoracis Bilateral Action: Extension of spine Identify the three divisions of the muscle group highlighted below. - correct answer Answer: Longissimus thoracis, Longissimus cervicis, Longissimus capitits Identify the origin and innervation of the muscle indicated by the pointers below. Be as specific as possible in your response. - correct answer Answer: Origin: cartilage of ribs 7-12, xiphoid process, lumbar vertebrae (Student must include at least 2 for full credit) Innervation: phrenic nerve (C3-5) (This is the diaphragm.) Identify the muscle and its origin indicated in the figure below. - correct answer Answer: Rhomboids Major (not minor) Origin: Spinous Process T2-5 Use the figure below to answer the following question: The axillary nerve innervates which of the following muscle(s)? Select all that apply. - correct answer C. Deltoid Identify the origin and insertion of the muscle indicated in the figure below. Be specific in your response. - correct answer Answer: Origin: medial epicondyle of humerus Insertion: mid-lateral surface of radius (This is the pronator teres.) Your patient sustained an injury to their facial nerve (CN VII). Which actions would be impaired? - correct answer E. a & b (Orbicularis oculi & frontalis) (eye closure & raising eyebrows) Your patient is in a seated position with his feet flat on the floor. He is having difficulty lifting his toes off the floor. What muscle(s) is impaired from contracting? - correct answer E. A & C (Tibialis anterior and extensor digitorum longus [dorsiflexion]) A person sustained a back injury to the muscle group closest to the spine. What muscle group was injured? - correct answer Spinalis True or False: When a muscle contracts, the Z lines within a sarcomere come closer together towards the M line. - correct answer True True or False: The I bands contain thick filaments. - correct answer False (thin filaments) Which muscle contracts to enable the main effort required to stand on your toes? - correct answer Gastrocnemius When Vastus Lateralis contracts, which bone is pulled anteriorly? - correct answer Tibia When flexor digitorum profundus contracts, what action(s) occurs? - correct answer E. A & C (Wrist flexion; flexion of digits 2-5) Contraction of __ results in __? - correct answer Iliacus, hip flexion When superior gemellus contracts, what action(s) will not occur at the hip? - correct answer G. B&E (Internal rotation; flexion)