EAR Structure

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Author:
cstephens9425
ID:
96265
Filename:
EAR Structure
Updated:
2011-08-05 17:50:09
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picture anatomy physiology
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Description:
Name parts of the human ear
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  1. Locate the bones of the hand
    • Haversian canal
    • Lengthwise central canal of the osteon enclosing blood vessels and nerves

    • compact bone
    • Dense bone tissue composed of osteons, which resist pressure and
    • shocks and protect the spongy tissue; it forms especially the diaphysis
    • of the long bones.


    • bone marrow
    • Soft substance contained in bone cavities, producing blood cells;
    • marrow is red in children, yellow in the long bones of adults.
    • osteon
    • Elementary cylindrical structure of the compact bone made up of
    • four to 20 concentric bone plates that surround the Haversian canal.
    • spongy bone
    • Tissue made of bony compartments separated by cavities filled with
    • bone marrow, blood vessels and nerves; this structure gives bones their
    • lightness.
    • periosteum
    • Fibrous membrane rich in blood vessels that envelopes the bone,
    • except at the articular surfaces; it contributes especially to the
    • bone’s growth in thickness
    • vastus medialis
    • Large deep inner-thigh muscle mainly enabling the knee to extend; it also stabilizes the knee.


    • rectus femoris
    • Powerful muscle enabling the knee to extend and the thigh to flex on the pelvis.


    • sartorius
    • Long narrow ribbon-shaped muscle enabling the thigh to flex and to
    • rotate outwardly (outside the median axis); it also allows the leg to
    • flex.


    • adductor longus
    • Long muscle enabling the thigh to draw near the median axis of the
    • body; it also allows it to rotate outwardly (outside the median axis)
    • and to flex.


    • tensor of fascia lata
    • Thick muscle especially enabling the leg to stretch and the thigh
    • to flex and draw away from the median axis of the body; it also
    • stabilizes the hip and the knee.


    • brachioradialis
    • Muscle mainly enabling the forearm to flex on the arm.


    • rectus abdominis
    • Flat muscle enabling the trunk to flex frontward; it protects and
    • enables compression of the internal organs, and aids in expiration.


    • external oblique
    • Large thin muscle enabling the trunk to flex and to rotate on the
    • pelvis and the internal organs to compress; it also aids in expiration.


    • deltoid
    • Thick triangular muscle drawing the arm away from the median axis
    • of the body and directing it toward the front and back until it is
    • horizontal.


    • masseter
    • Masticator muscle enabling the lower jaw to move.
    • soleus
    • Thick muscle enabling the foot to extend, the heel to lift off the
    • ground and the body to rise; it is a major muscle involved in walking,
    • running and jumping.


    • gastrocnemius
    • Large thick muscle forming the curve of the calf and allowing the foot to extend; it also helps the knee to extend.


    • vastus lateralis
    • Large outer thigh muscle mainly allowing the knee to extend; it also stabilizes the knee.
    • brachialis
    • Powerful muscle enabling the forearm to flex on the arm.


    • biceps of arm
    • Muscle allowing the forearm to flex and to rotate outwardly (palm
    • of the hand toward the front); the biceps contracts while the triceps
    • relaxes.


    • pectoralis major
    • Flat muscle enabling various arm movements, such as drawing it
    • near the median axis of the body and rotating it inwardly (toward the
    • median axis); it also aids in inhalation.


    • trapezius
    • Large flat triangular muscle enabling many shoulder movements; it also helps to extend the head.


    • sternocleidomastoid
    • Powerful muscle enabling the head to flex, to tilt sideways and to rotate.
    • gastrocnemius
    • Large thick muscle forming the curve of the calf and allowing the foot to extend; it also helps the knee to extend.


    • gracilis
    • Muscle enabling the thigh to draw near the median axis of the
    • body, and the leg to flex on the thigh and to rotate inwardly (toward
    • the median axis).


    • biceps of thigh
    • Large muscle enabling the leg to flex on the thigh and to rotate
    • outwardly (outside the median axis) and the thigh to extend on the
    • pelvis.


    • semimembranosus
    • Flat muscle enabling the thigh to extend on the pelvis, the knee
    • to flex, and the thigh and the leg to rotate inwardly (toward the median
    • axis).


    • semitendinosus
    • Long muscle enabling the thigh to extend on the pelvis, the knee
    • to flex, and the thigh and the leg to rotate inwardly (toward the median
    • axis).


    • gluteus maximus
    • Thick muscle enabling the hip to extend and to rotate outwardly
    • (outside the median axis); it also allows the trunk to return to a
    • vertical position.
    • brachioradialis
    • Flat muscle primarily enabling the forearm to flex; it also helps
    • it to rotate outwardly, bringing the palm of the hand toward the front.


    • triceps of arm
    • Powerful muscle enabling the forearm to extend on the arm; it contracts whereas the biceps relaxes.


    • latissimus dorsi
    • Large flat muscle especially enabling the arm to draw near the median axis of the body, to extend and to rotate inwardly.
    • adductor magnus
    • Powerful muscle enabling the thigh to draw near the median axis of
    • the body, to rotate outwardly (outside the median axis), to flex and to
    • extend.


    • vastus lateralis
    • Large outer thigh muscle mainly allowing the knee to extend; it also stabilizes the knee.


    • external oblique
    • Large thin muscle enabling the trunk to flex and to rotate on the
    • pelvis and the internal organs to compress; it also aids in expiration.
    • trapezius
    • Large flat triangular muscle enabling many shoulder movements; it also helps to extend the head.
  2. Name the lobes of the brain
  3. know the bones of the skull
  4. sheep brain
  5. know eye strctures

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