Lecture 11 - Muscular system A+P2
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Questions and Answers

Which muscle is responsible for dorsiflexion and inversion of the foot?

  • Extensor Digitorum Longus
  • Fibularis (Peroneus) Brevis
  • Tibialis Anterior (correct)
  • Gastrocnemius

What is the action of the Flexor Hallucis Longus muscle?

  • Dorsiflexion of the big toe
  • Flexion of the knee
  • Plantar flexion of the foot (correct)
  • Eversion of the foot

Which muscle has an origin on the medial condyle of the tibia and proximal shaft of the tibia?

  • Fibularis (Peroneus) Longus
  • Tibialis Posterior
  • Extensor Hallucis Longus
  • Tibialis Anterior (correct)

What is the action of the Gastrocnemius muscle?

<p>Plantar flexion of the foot (B)</p> Signup and view all the answers

Which compartment of the lower leg contains the Fibularis (Peroneus) Longus and Fibularis (Peroneus) Brevis muscles?

<p>Lateral Compartment (A)</p> Signup and view all the answers

What is the insertion of the Tibialis Anterior muscle?

<p>Base of 1st metatarsal (B)</p> Signup and view all the answers

What is the origin of the Long Head of the Biceps Brachii muscle?

<p>Superior portion of the labrum (C)</p> Signup and view all the answers

Which muscle is the MOST POWERFUL FLEXOR of the elbow joint?

<p>Brachialis (B)</p> Signup and view all the answers

What is the term used for medial epicondylitis caused by overuse of muscles on the anterior side of the forearm?

<p>Golfer’s Elbow (A)</p> Signup and view all the answers

What is the origin of the Iliopsoas Muscle?

<p>T12/L1 and iliac fossa (D)</p> Signup and view all the answers

What is the function of the Hamstrings?

<p>Flexion at the knee joint and extension at the hip joint (A)</p> Signup and view all the answers

What is the insertion of the Quadriceps Femoris muscle?

<p>Tibial tuberosity (A)</p> Signup and view all the answers

What is the function of the Adductor Magnus muscle?

<p>Adduction at the hip joint (B)</p> Signup and view all the answers

What is the origin of the Triceps Brachii muscle?

<p>Infraglenoid tubercle (A)</p> Signup and view all the answers

What is the term used for the injury caused by overuse of muscles on the posterior side of the forearm?

<p>Tennis Elbow (D)</p> Signup and view all the answers

What is the function of the Sartorius muscle?

<p>Weakly flexes, abducts, and laterally rotates the hip (B)</p> Signup and view all the answers

Which type of muscle tissue is found in the walls of hollow internal structures?

<p>Smooth muscle tissue (C)</p> Signup and view all the answers

What is the characteristic of a muscle's origin?

<p>The site that does not move during contraction (D)</p> Signup and view all the answers

Which muscle is an example of a prime mover at the elbow joint?

<p>Biceps brachial (C)</p> Signup and view all the answers

What determines the direction of a muscle's name?

<p>The direction of the muscle fibers to the midline (A)</p> Signup and view all the answers

What type of muscle tissue is both striated and involuntary?

<p>Cardiac muscle tissue (D)</p> Signup and view all the answers

Which term describes the arrangement of muscles at a joint?

<p>Antagonistic (A)</p> Signup and view all the answers

What is the main function of the external intercostal muscles during breathing?

<p>To elevate the ribs during inspiration (A)</p> Signup and view all the answers

What is the most important muscle that powers breathing?

<p>Diaphragm (D)</p> Signup and view all the answers

What is the name of the opening in the diaphragm through which the aorta passes?

<p>Aortic hiatus (D)</p> Signup and view all the answers

What is the primary function of the biceps brachial muscle during elbow movement?

<p>To contract and flex the elbow (A)</p> Signup and view all the answers

Which muscle is responsible for depressing the ribs?

<p>Rectus abdominis (A)</p> Signup and view all the answers

What is the role of the antagonist muscle during a movement?

<p>To stretch and then become the primary mover (D)</p> Signup and view all the answers

What is the name of the fibrous band that separates the right and left rectus abdominis muscles?

<p>Linea alba (B)</p> Signup and view all the answers

What type of connective tissue connects muscles to bones?

<p>Tendons (A)</p> Signup and view all the answers

Which muscle originates from the supraspinous fossa and inserts on the greater tubercle of the humerus?

<p>Supraspinatus (B)</p> Signup and view all the answers

What is the main function of the rotator cuff muscles?

<p>To strengthen and stabilize the shoulder (B)</p> Signup and view all the answers

Which muscle is responsible for lifting the chin and extending the neck?

<p>Sternocleidomastoid (C)</p> Signup and view all the answers

Which muscle originates from the anterior abdominal wall and inserts on the linea alba?

<p>Rectus abdominis (C)</p> Signup and view all the answers

What is the action of the trapezius muscle?

<p>To raise the shoulders (C)</p> Signup and view all the answers

What is the name of the muscle that flexes the vertebral column and produces a 'six-pack' appearance?

<p>Rectus abdominis (A)</p> Signup and view all the answers

Which muscle is the widest back muscle?

<p>Latissimus Dorsi (C)</p> Signup and view all the answers

What is the name of the opening in the diaphragm through which the esophagus passes?

<p>Esophageal hiatus (A)</p> Signup and view all the answers

What is the primary function of the erector spinae muscle?

<p>To extend the vertebral column (B)</p> Signup and view all the answers

Which muscle is responsible for producing a 'winging' of the scapula?

<p>Pectoralis Minor (B)</p> Signup and view all the answers

What is the origin of the latissimus dorsi muscle?

<p>Spines T7-L5, ribs 9-12, and iliac and sacral crests (A)</p> Signup and view all the answers

What is the insertion of the pectoralis major muscle?

<p>Greater tubercle of the humerus (A)</p> Signup and view all the answers

What is the origin of the Short Head of the Biceps Brachii muscle?

<p>Coracoid process (A)</p> Signup and view all the answers

Which muscle is responsible for flexion, lateral rotation, and abduction of the hip?

<p>Iliopsoas Muscle (C)</p> Signup and view all the answers

What is the insertion of the Triceps Brachii muscle?

<p>Olecranon (D)</p> Signup and view all the answers

Which muscle is an example of a flexor of the hand and wrist?

<p>Tereres (B)</p> Signup and view all the answers

What is the origin of the Semitendinosus muscle?

<p>Ischial tuberosity (A)</p> Signup and view all the answers

Which muscle is responsible for producing a 'winging' of the scapula when paralyzed?

<p>Serratus Anterior (A)</p> Signup and view all the answers

What is the insertion of the Quadriceps Femoris muscle?

<p>Tibial tuberosity (A)</p> Signup and view all the answers

Which muscle is responsible for flexion of the elbow joint?

<p>Biceps Brachii (D)</p> Signup and view all the answers

What is the origin of the Gluteus Maximus muscle?

<p>Ilium (B)</p> Signup and view all the answers

Which muscle is an example of an extensor of the hand and wrist?

<p>Extensor Carpi Radialis (B)</p> Signup and view all the answers

What is the primary function of the triceps brachial muscle during elbow movement?

<p>Extension of the elbow (D)</p> Signup and view all the answers

What is the role of the antagonist muscle during a movement?

<p>Contracts to oppose the movement (C)</p> Signup and view all the answers

Which type of connective tissue connects muscles to bones?

<p>Tendons (D)</p> Signup and view all the answers

What is the characteristic of a muscle's origin?

<p>The point at which the muscle attaches to the bone (A)</p> Signup and view all the answers

Which muscle is responsible for lifting the chin and extending the neck?

<p>Sternocleidomastoid (A)</p> Signup and view all the answers

Which muscle is the widest back muscle?

<p>Latissimus Dorsi (A)</p> Signup and view all the answers

What is the primary function of the erector spinae muscle?

<p>Extension of the vertebral column (D)</p> Signup and view all the answers

Which muscle originates from the anterior abdominal wall and inserts on the linea alba?

<p>Rectus Abdominis (C)</p> Signup and view all the answers

What is the action of the pectoralis major muscle?

<p>Adduction of the shoulder joint (C)</p> Signup and view all the answers

What is the term used for the fibrous band that separates the right and left rectus abdominis muscles?

<p>Linea Alba (D)</p> Signup and view all the answers

Which of the following muscles is responsible for producing dorsiflexion and inversion of the foot?

<p>Tibialis Anterior (A)</p> Signup and view all the answers

Which compartment of the lower leg contains the Tibialis Anterior muscle?

<p>Anterior Compartment of Lower Leg (B)</p> Signup and view all the answers

What is the function of the muscle that runs obliquely between the Gastrocnemius and Soleus muscles?

<p>Plantar flexion of the foot (B)</p> Signup and view all the answers

Which muscle originates from the lateral condyle and proximal shaft of the tibia?

<p>Tibialis Anterior (A)</p> Signup and view all the answers

What is the result of the contraction of the Flexor Hallucis Longus muscle?

<p>Flexion of the big toe (B)</p> Signup and view all the answers

Which muscles plantar flex the foot at the ankle joint?

<p>Posterior Compartment muscles (D)</p> Signup and view all the answers

What is the characteristic of a muscle's insertion?

<p>Site that moves during the contraction (A)</p> Signup and view all the answers

What type of muscle tissue is both striated and voluntary?

<p>Skeletal muscle tissue (A)</p> Signup and view all the answers

What is the term used to describe the arrangement of muscles at a joint?

<p>Antagonistic (B)</p> Signup and view all the answers

What is the role of the prime mover muscle during a movement?

<p>To cause the desired movement (B)</p> Signup and view all the answers

What is the characteristic of a muscle's origin and insertion?

<p>Origin is typically more proximal and insertion is typically more distal (A)</p> Signup and view all the answers

What is the function of skeletal muscles in thermogenesis?

<p>To generate heat (A)</p> Signup and view all the answers

What is the action of the external intercostal muscles during inspiration?

<p>Elevate the ribs (A)</p> Signup and view all the answers

What is the origin of the internal oblique muscle?

<p>Iliac crest and thoracolumbar fascia (A)</p> Signup and view all the answers

What is the function of the diaphragm during breathing?

<p>It increases the dimension of the thoracic cavity (B)</p> Signup and view all the answers

Which muscle is responsible for flexing the vertebral column?

<p>Rectus abdominis (C)</p> Signup and view all the answers

What is the name of the opening in the diaphragm through which the inferior vena cava passes?

<p>Caval hiatus (C)</p> Signup and view all the answers

Which muscle originates from the xiphoid process and ribs 7-12?

<p>Rectus abdominis (D)</p> Signup and view all the answers

What is the function of the transversus abdominis muscle?

<p>It compresses the abdominal contents (D)</p> Signup and view all the answers

Which muscle is part of the rotator cuff?

<p>Teres minor (B)</p> Signup and view all the answers

What is the action of the internal intercostal muscles during forced expiration?

<p>They draw the ribs together (C)</p> Signup and view all the answers

Which muscle originates from the inferior border of the rib above and inserts on the superior border of the rib below?

<p>External intercostal (A)</p> Signup and view all the answers

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