Anatomy 5
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Questions and Answers

Which muscle is the largest and most superficial of the three flat muscles in the anterior abdominal wall?

  • Rectus abdominis
  • Obliquus externus abdominis (correct)
  • Transversus abdominis
  • Obliquus internus abdominis
  • What is the function of the obliquus externus abdominis muscle?

  • Extension of the spine
  • Compression of the abdominal contents
  • Contralateral rotation of the ribcage (correct)
  • Flexion of the trunk
  • Which muscle lies beneath the obliquus externus abdominis?

  • Obliquus internus abdominis (correct)
  • Transversus abdominis
  • Rectus abdominis
  • Psoas major
  • What is the shape of the obliquus internus abdominis muscle?

    <p>Irregularly quadrilateral</p> Signup and view all the answers

    Which muscle is thinner and smaller than the obliquus externus abdominis?

    <p>Obliquus internus abdominis</p> Signup and view all the answers

    What is the function of the obliquus internus abdominis muscle?

    <p>Compression of the abdominal contents</p> Signup and view all the answers

    What is the inguinal ligament?

    <p>A ligament that attaches the oblique muscles</p> Signup and view all the answers

    Which nerves innervate the oblique muscles?

    <p>Intercostal nerves</p> Signup and view all the answers

    Which muscle is situated on the lateral and anterior parts of the abdomen?

    <p>Obliquus externus abdominis</p> Signup and view all the answers

    What is the function of the oblique muscles?

    <p>All of the above</p> Signup and view all the answers

    Which muscle helps form the rectus sheath?

    <p>Transversus abdominis</p> Signup and view all the answers

    Which muscle is the most internal of the flat muscles of the abdomen?

    <p>Transversus abdominis</p> Signup and view all the answers

    Which muscle is crossed by fibrous bands called tendinous intersections?

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

    Which layer of the abdominal wall is composed of the aponeurosis of the three flat muscles as they converge in the midline to form the median linea alba?

    <p>Rectus sheath</p> Signup and view all the answers

    Which layer of the abdominal wall is a thick superficial layer of adipose and areolar connective tissue?

    <p>Camper's fascia</p> Signup and view all the answers

    Which layer of the abdominal wall sits between Camper's fascia and the rectus sheath?

    <p>Scarpa's fascia</p> Signup and view all the answers

    Which layer of the abdominal wall is a protective covering over the rectus abdominis muscle?

    <p>Rectus sheath</p> Signup and view all the answers

    Where is the arcuate line located?

    <p>Halfway between the umbilicus and pubic symphysis</p> Signup and view all the answers

    Inferior to the arcuate line, the aponeuroses of all three lateral abdominal muscles pass anterior to the rectus abdominis muscle. True or False?

    <p>True</p> Signup and view all the answers

    Which muscle is responsible for extending the trunk of the lumbar spine and fixing rib 12?

    <p>Quadratus lumborum</p> Signup and view all the answers

    Which muscle is responsible for flexing the hip and laterally rotating the thigh?

    <p>Iliacus</p> Signup and view all the answers

    Which muscle is sometimes considered to be the iliopsoas muscle due to its common distal attachment onto the lesser trochanter of the femur?

    <p>Iliacus and psoas</p> Signup and view all the answers

    What is the function of the psoas muscle?

    <p>Flexion of the thigh and trunk flexion, lateral flexion, lateral rotation of the thigh</p> Signup and view all the answers

    What is the nerve supply for the Quadratus lumborum muscle?

    <p>Ventral rami of spinal nerves T12, L1, 2, 3, 4</p> Signup and view all the answers

    What is the nerve supply for the Psoas Major muscle?

    <p>Lumbar plexus (L1, L2, L3)</p> Signup and view all the answers

    What is the nerve supply for the Iliacus muscle?

    <p>Femoral N.</p> Signup and view all the answers

    What is the function of the Conjoint tendon?

    <p>Strengthens the abdominal wall at the superficial inguinal ring</p> Signup and view all the answers

    What structures are contained within the inguinal canal in males?

    <p>Ductus (vas) deferens, testicular vessels, autonomic nerves, and lymphatics</p> Signup and view all the answers

    What structures are contained within the inguinal canal in females?

    <p>Round ligament of the uterus and ilioinguinal nerve</p> Signup and view all the answers

    Which bone forms part of the shoulder girdle and is the only long bone that lies horizontally?

    <p>Clavicle</p> Signup and view all the answers

    What is the shape of the clavicle bone?

    <p>Curved</p> Signup and view all the answers

    Which bones make up the shoulder girdle?

    <p>Clavicle and scapula</p> Signup and view all the answers

    Which bones make up the pelvic girdle?

    <p>Hip bone</p> Signup and view all the answers

    Which bones are part of the upper limb?

    <p>Humerus, radius, ulna</p> Signup and view all the answers

    Which bones are part of the lower limb?

    <p>Femur, tibia, fibula</p> Signup and view all the answers

    Which bones in the upper limb articulates with the radius at its distal end?

    <p>Scaphoid and lunate</p> Signup and view all the answers

    Which two processes of the ulna form the walls of the trochlear notch?

    <p>Olecranon and coronoid processes</p> Signup and view all the answers

    What is the name of the prominent ridge on the lateral surface of the ulnar shaft?

    <p>Supinator crest</p> Signup and view all the answers

    Which bone in the carpal row is the largest bone in the proximal row?

    <p>Scaphoid</p> Signup and view all the answers

    What structure converts the carpal arch into the carpal tunnel?

    <p>Flexor retinaculum</p> Signup and view all the answers

    How many tendons and a nerve pass through the carpal tunnel from the forearm to the hand?

    <p>Nine tendons and a nerve</p> Signup and view all the answers

    How many phalanges does each digit of the hand consist of, except for the thumb?

    <p>Three phalanges</p> Signup and view all the answers

    What is the name of the bone in the distal row of carpal bones that has a hook-like structure?

    <p>Hamate</p> Signup and view all the answers

    What are the movements of the scapula?

    <p>Elevation, depression, protraction, retraction, upward rotation, downward rotation</p> Signup and view all the answers

    What bone lies on the posterolateral aspect of the thorax, overlying the 2nd–7th ribs?

    <p>Scapula</p> Signup and view all the answers

    Which bone has a medial (vertebral) border, a lateral border, and a superior border?

    <p>Scapula</p> Signup and view all the answers

    Which bone has an anterior or costal surface that is flat and slightly concave?

    <p>Scapula</p> Signup and view all the answers

    Which bone has a dorsal surface that is divided by the spine of the bone into a smaller supraspinous fossa and a larger infraspinous fossa?

    <p>Scapula</p> Signup and view all the answers

    Which bone has a prominent conoid tubercle near its acromial end?

    <p>Clavicle</p> Signup and view all the answers

    Which bone has a head, greater tubercle, and lesser tubercle at its proximal end?

    <p>Humerus</p> Signup and view all the answers

    Which bone has a lateral lip and a medial lip associated with the intertubercular sulcus?

    <p>Humerus</p> Signup and view all the answers

    Which bone has a distal end that includes the trochlea and capitulum, as well as the olecranon, coronoid, and radial fossa?

    <p>Humerus</p> Signup and view all the answers

    What three muscles attach to the humerus at the bicipital groove?

    <p>pectoralis major, latissimus dorsi, teres major</p> Signup and view all the answers

    Match the movements of the joint to the joint.

    <p>shoulder girdle = flexion, extension, abduction, adduction, medial and lateral rotation, circumduction elbow joint = flexion and extension radio-ulnar joint = pronation and supination wrist joint = adduction, abduction, flexion, extension, circumduction</p> Signup and view all the answers

    Match the movements of the joint to the joint.

    <p>metacarpophalangeal joint = abduction, adduction, flexion, extension, circumduction phalangeal joint = flexion, extension scapular movements = elevation, depression, abduction, adduction (retraction), upwards and downwards rotation radio-ulanr joint = pronation, supination</p> Signup and view all the answers

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