Bio201 Practice Test #2 for muscles

Card Set Information

Author:
ChathamBio502
ID:
296196
Filename:
Bio201 Practice Test #2 for muscles
Updated:
2016-02-16 12:41:35
Tags:
Bio201 anatomy
Folders:

Description:
Lectures 11-12 & 14-16
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user ChathamBio502 on FreezingBlue Flashcards. What would you like to do?


  1. A muscle that crosses the elbow joint anteriorly will be able to perform which function?
    Flexion of the forearm at the elbow
  2. Name one muscle that can abduct the arm at the glenohumeral joint.
    Either deltoid or supraspinatus
  3. Which muscles can engage in lateral rotation of the arm at the glenohumeral joint and why?
    Infrapinatus and teres minor. Because both muscles are located on the posterior surface of the scapula, travel in a medial to lateral direction and pass posteriorly to the glenohumeral joint, they are able to laterally rotate the arm.
  4. Change the insertion of of subscapularis such that it becomes at lateral humeral rotator.
    If subscapularis passed inbetween the arm and thorax and wrapped around the posterior surface of the humerus to insert close to the insertion of infraspinatus and teres minor, it would pass the GH joint posteriorly and could participate in lateral humeral rotation.
  5. Name all of the muscles that can flex the arm at the glenohumeral joint.
    • Biceps brachii
    • Coracobrachialis
    • Anterior fibers of deltoid
  6. Name a synergist of the superior fibers of trapezius.
    Levator scapulae
  7. Name an antagonist of the superior fibers of trapezius.
    • The inferior fibers or trapezius
    • Pectoralis minor
    • (Rhomboids as well, but we did not discuss this function for them)
  8. Properly associate the muscle unit to the connective tissue covering:

    A) Skeletal muscle        1) perimysium
    B) muscle fiber             2) epimysium
    C) muscle fascicle         3) endomysium
    • A-2
    • B-3
    • C-1
  9. Name a muscle that passes anterior to the elbow joint and anterior to the wrist joint, on the medial side. Which motions can that muscle perform?
    Flexor carpi ulnaris: flexes the forearm at the elbow (b/c it passes anterior to the elbow joint), palmarflexes the hand at the wrist (b/c it passes anterior to the wrist joint) and adducts the hand at the wrist (b/c it passes on the medial side of the wrist joint)
  10. Do you think a muscle located in the posterior forearm would be called a "flexor" or an "extensor"? Why?
    An extensor mucle b/c most of the muscles on the posterior forearm extend the digits and dorsiflex (which some people call extend) the hand at the wrist
  11. Which head of triceps can extend the arm at the glenohumeral joint and why?
    Long head only b/c it is the only one associated with the glenohumeral joint (it originates at the infraglenoid tubercle, while medial and lateral head originate on the humerus)
  12. True or false (if false, correct it to make it true):
    All of the rotator cuff muscles help to increase the structural integrity of the glenohumeral joint by pulling the humeral head medially.
    TRUE
  13. True or false (if false, correct it to make it true):

    Subclapularis is located on the posterior surface of the scapula.
    FALSE: it is located on the anterior surface, in the subscapular fossa
  14. True or false (if false, correct it to make it true):

    Rhomboid major and minor have different functions from one another.
    FALSE: the both participate in scapular retraction
  15. The following are true regarding muscles that can flex the thigh at the hip:
    A) they all originate on the pelvis
    B) They all also cross anterior to the knee joint
    C) they all pass the hip joint
    D) They include all of the quadriceps muscles
    E) They all pass anterior to the hip joint
    C&E
  16. The following are true of the posterior forearm muscles (this is a hard one, think carefully about each option):
    A) All of the superficial muscles originate from (or close to) the medial humeral epicondyle
    B) Two of them are antoginists of flexor carpi radialis for abduction
    C) One of them is an antoginist of flexor digitorum profundus for all of its actions
    D) Extensor carpi ulnaris is a synergist for adduction with flexor carpi ulnaris
    E) Extensor carpi radialis longus is a synergist for abduction with flexor carpi radialis, but extensor carpi radialis brevis is not
    C&D
  17. Name a muscle that can dorsiflex the hand at the wrist, but cannot abduct or adduct the hand at the wrist.
    Extensor digitorum, extensor digiti minimi or extensor indicis
  18. Provide two requirements for a muscle that elevates the scapula.
    • 1) It originates superior to the scapula
    • 2) it inserts onto the scapula
  19. Pick one muscle that participates in inversion of the foot and provide:
    A) one reason that it is able to act as an inverter
    B) one synergistic muscle
    C) one antagonistic muscle (4pts).
    • Answers for tibialis anterior
    • A) inserts onto the plantar medial surface of the foot
    • B) tibialis posterior
    • C) fibularis longus (or brevis or fibularis tertius)

    • Answers for tibilais posterior
    • A) crosses ankle on medial side
    • B) tibialis posterior
    • C) fibularis longus (or brevis or fibularis tertius)
  20. Pick one muscle located in the superficial anterior compartment of the forearm and provide:
    A) two of its functions
    B) one reason that it can perform each function
    • Multiple answers are possible for the following muscles:
    • flexor carpi radialis, flexor carpi ulnaris, pronator teres, palmaris longus

    • For flexor carpi ulnaris: 
    • palmarflex the hand at the wrist (because it passes anterior to the wrist joint)
    • and 
    • adduct the hand at the wrist (because it passes on the medial side of the wrist)


  21. Name a muscle that can retract the scapula.
    Rhomboid major, rhomboid minor, trapezius
  22. True or false (if false, provide the correct information):
    The muscle located in the infraspinous fossa can flex the arm at the glenohumeral joint.
    FALSE: infraspinatus can laterally rotate the arm at the glenohumeral joint and pull the humeral head medially
  23. Why can trapezius elevate, depress and retract the scapula?
    Because it has such a broad origin relative to a rather narrow insertion on the scapula, some of the fibers are oriented superior to the scapula, enabling elevation, some are oriented inferior to the scapula, enabling depression and some of the fibers are located simply medial to the scapula, enabling scapular retraction (and medial scapular rotation)
  24. Design a muscle that can extend the leg at the knee, dorsiflex the foot at the ankle, and extends all of the joints the hallux (be careful, no such muscle exists). Provide a potential origin and insertion and state which joints it passes and the positional relationship to each joint (HARD ONE, obviously)
    • Origin (numerous options are possible): anterior surface of the femur
    • Insertion (only one answer is possible): the dorsal surface of the hallucial distal phalanx
    • Passes the knee joint anteriorly
    • passes the ankle joint anteriorly
    • Passes the joints of the hallux on the dorsal surface of the foot (the metatarsalphalangeal joint and the proximal interphalangeal joint)

What would you like to do?

Home > Flashcards > Print Preview