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A/P Week 6
| Question | Answer |
|---|---|
| Skeletal muscles constitute approximately ____ of our body weight. 10% 25% 50% 75% | 50% |
| Muscles located on the lower leg move the: thigh. hip. knee. foot. | foot. |
| The Achilles tendon is common to both the gastrocnemius and the soleus. True False | True |
| A muscle is attached to the femur and tibia. Its function or action is to bend the knee. When it contracts, it is acting as the: antagonist. prime mover. fixator. synergist. | prime mover. |
| Muscles may be named according to: function. direction of fibers. points of attachment. all of the above. | all of the above. |
| The soleus muscle is an example of a _____ muscle. convergent parallel fusiform pennate | pennate |
| The muscle that raises or lowers the shoulders or shrugs them is the: deltoid. latissimus dorsi. trapezius. pectoralis minor. | trapezius. |
| Which of the following muscles does not move the upper arm? Pectoralis major Latissimus dorsi Deltoid Trapezius | Trapezius |
| The action of the brachialis muscle is to _____ the forearm. flex extend pronate supinate | flex |
| The covering of individual muscle fibers is the: epimysium. endomysium. periosteum. perimysium. | endomysium. |
| Which of the following body systems assists the muscles in maintaining posture? Digestive Endocrine Excretory All of the above | All of the above |
| Which of the following is not a muscle that moves the thigh? Adductor longus Gracilis Iliopsoas Sacrospinalis | Sacrospinalis |
| The muscle that extends and adducts the arm is the: deltoid. latissimus dorsi. trapezius. pectoralis minor. | latissimus dorsi. |
| The muscle(s) assisting in rotating the arm outward is (are) the: teres minor. latissimus dorsi. supraspinatus. All of the above are correct. | teres minor. |
| The teres major and teres minor muscles move the: forearm. arm. shoulder. wrist. | arm. |
| Which of the following muscles has fibers on a transverse plane? Rectus abdominis External oblique Transverse abdominis Internal intercostals | Transverse abdominis |
| The most common type of lever in the body is a _____-class lever. first second third fourth | third |
| A muscle that assists with mastication is the: orbicularis oris. buccinator. platysma. masseter. | masseter. |
| Which of the following is not a group of pennate muscles? Bipennate Tripennate Multipennate All of the above are groups of pennate muscles. | Tripennate |
| When an athlete injures a muscle of the hamstring group, the injury is on the: upper arm. posterior lower leg. posterior thigh. anterior thigh. | posterior thigh. |
| Another name for a skeletal muscle cell is a(n): muscle fiber. fascicle. aponeurosis. fascia. | muscle fiber. |
| In pushing (pressing) a weight from shoulder height to above the head, which of the following muscles is least utilized? Triceps brachii Biceps brachii Deltoid | Biceps brachii |
| Which of the following is not a muscle of the quadriceps femoris group? Rectus femoris Biceps femoris Vastus medialis Vastus intermedius | Biceps femoris |
| The muscle that allows the thumb to be drawn across the palm to touch the tip of any finger is the: extensor digitorum. opponens pollicis. palmaris longus. flexor carpi radialis. | opponens pollicis. |
| The sternocleidomastoid muscle is an example of a muscle named for its: function. number of attachments. size. points of attachment. | points of attachment. |
| Which of the following is not a muscle that moves the foot? Sartorius Peroneus longus Tibialis anterior Soleus | Sartorius |
| The muscle that flexes the semipronated or semisupinated forearm is the: biceps brachii. brachialis. brachioradialis. triceps brachii. | brachioradialis. |
| The pectoralis major muscle is an example of a _____ muscle. convergent parallel fusiform pennate | convergent |
| Which of the following is not a posterior muscle that acts on the shoulder girdle? Trapezius Pectoralis minor Levator scapulae Rhomboideus | Pectoralis minor |
| Muscles that contract at the same time as the prime mover are called: synergists. fixators. antagonists. both A and B. | both A and B. |
| Another name for a sphincter muscle is a _____ muscle. spiral circular fusiform convergent | circular |
| Groups of skeletal muscle fibers are bound together by a connective tissue envelope called the: endomysium. perimysium. epimysium. aponeurosis. | perimysium. |
| The flexor muscles that move the fingers are mostly located on the: anterior lateral surface of the forearm. anterior medial surface of the forearm. posterior surface of the forearm. posterior surface of the hand. | anterior medial surface of the forearm. |
| The latissimus dorsi muscle is an example of a _____ muscle. bipennate convergent spiral fusiform | spiral |
| The origin of a muscle is on the femur, and the insertion is on the tibia. When it contracts, it bends the knee. Its fibers run parallel to the body. Which of the following terms might be part of its name? Extensor Abductor Flexor Adductor | Flexor |
| All of the following muscles are part of the rotator cuff muscles except the: deltoid. infraspinatus. supraspinatus. teres minor. | deltoid. |
| White fibers are also called _____ fibers. fast slow elongated intermediate | fast |
| The ability of muscle cells to respond to nerve stimuli is called: irritability. contractility. extensibility. elasticity. | irritability. |
| A gliding joint is an example of a(n) _____ joint. uniaxial biaxial multiaxial pivot | multiaxial |
| The ion necessary for cross-bridging is: iron. sodium. potassium. calcium. | calcium. |
| An example of a pivot joint is(are) the: head of the radius articulating with the ulna. first metacarpal articulating with the trapezium. humerus articulating with the scapula. interphalangeal joints. | head of the radius articulating with the ulna. |
| Stretching the foot down and back and pointing the toe is called: plantar flexion. dorsiflexion. hyperextension. abduction. | plantar flexion. |
| The type of movement that occurs when the head is dropped to the shoulder, then to the chest, to the other shoulder, and toward the back is: rotation. flexion. extension. circumduction. | circumduction. |
| A condyloid joint is an example of a(n) _____ joint. uniaxial biaxial multiaxial immovable | biaxial |
| Painful muscle contractions or involuntary twitches are called: tetanic contractions. cramps. convulsions. fibrillations. | cramps. |
| Which of the following terms describes an isometric contraction? Eccentric contraction Static tension Concentric contraction Both A and C | Static tension |
| Which of the following is not a part of the neuromuscular junction? T-tubules Motor neuron Motor end plate All of the structures are part of the neuromuscular junction. | T-tubules |
| Which type of joint joins the two pubic bones together? Suture Synovial Synchondrosis Symphysis | Symphysis |
| Which structure functions to temporarily store calcium ions? T-tubules Sarcolemma Sarcoplasmic reticulum Myofilaments | Sarcoplasmic reticulum |
| Physiological muscle fatigue may be caused by: a relative lack of ATP. high levels of lactate. failure of the sodium-potassium pumps. all of the above. | all of the above. |
| The opposite of eversion is: protraction. depression. retraction. none of the above. | none of the above. |
| An example of a hinge joint is(are) the: head of the radius articulating with the ulna. interphalangeal joints. first metacarpal articulating with the trapezium. head of the humerus articulating with the scapula. | interphalangeal joints. |
| The strength of a muscle contraction is influenced by the: amount of load. initial length of muscle fibers. recruitment of motor units. All of the above are correct. | All of the above are correct. |
| Skeletal muscles are innervated by: somatic motor neurons. autonomic motor neurons. both somatic and autonomic motor neurons. internal stimulation. | somatic motor neurons. |
| Muscle contractions will continue as long as: the calcium ions are attached to the troponin. there is dopamine in the neuromuscular junction. there is ADP in the muscle cell. T-tubules are transmitting impulses. | the calcium ions are attached to the troponin. |
| The type of movement possible at a synovial joint depends on the: amount of synovial fluid in the joint. shape of the articulating surfaces of the bones. presence of bursae in the joint. Both A and B are correct. | shape of the articulating surfaces of the bones. |
| Which of the following proteins found in myofilaments contains the cross-bridges? Myosin Actin Tropomyosin Troponin | Myosin |
| The protein molecule that has heads jutting out for cross-bridging is: actin. myosin. troponin. tropomyosin. | myosin. |
| Which type of muscle does not have T-tubules? Smooth Cardiac Striated All muscles have T-tubules. | Smooth |
| All of the following are noninflammatory joint disorders except: dislocation. juvenile rheumatoid arthritis. osteoarthritis. All of the above are noninflammatory joint disorders. | juvenile rheumatoid arthritis. |
| Moving a part of the body forward is: protraction. elevation. inversion. depression. | protraction. |
| What are the most movable joints in the body? Symphyses Synovial Syndesmoses Synchondroses | Synovial |
| The knee joint is an example of a _____ joint. hinge ball and socket saddle gliding | hinge |
| The largest and most frequently injured joint is the: hip. knee. shoulder. ankle. | knee. |
| In terms of function, which is considered an immovable joint? Synarthrosis Amphiarthrosis Diarthrosis All joints are movable. | Synarthrosis |
| During which phase of the twitch contraction is there a triggering of the release of calcium ions into the sarcoplasm? Latent period Contraction phase Relaxation phase None of the above | Latent period |
| Which joint allows for the widest range of movement? Gliding Saddle Ball and socket Hinge | Ball and socket |
| Which joint allows for a unique movement called opposition? Saddle Pivot Hinge Condyloid | Saddle |
| A contraction in which the tension within the muscle remains the same but the length changes is called a(n) _____ contraction. tonic isotonic isometric tetanic | isotonic |
| Which joint allows for the most movement? Gliding Saddle Ball and socket Trochoid | Ball and socket |
| Most body movements are _____ contractions. isotonic isometric a combination of isotonic and isometric single twitch | isotonic |
| Attempting to pick up an object too heavy to lift would result in which type of muscle contraction? Isotonic Flaccid Treppe Isometric | Isometric |
| Kicking a football is accomplished by knee: pronation. adduction. extension. flexion. | extension. |
| The rotator cuff muscles and tendons form a cufflike arrangement around the _____ joint. shoulder hip knee ankle | shoulder |
| The opposite of dorsiflexion is: dorsiextension. abduction. plantar flexion. none of the above. | plantar flexion. |
| Cross-bridges are also called: myosin heads. motor end plates. synapses. motor neurons. | myosin heads. |
Created by:
cmblaska