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Showing posts from May, 2017

Comparison between tract and nerve

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  Comparison between tract and nerve Nerve Nerve contain bundle of axons (nerve fibers) in the peripheral nervous system (PNS) that transmits signals between the central nervous system (CNS) and other parts of the body. It is the most important part of peripheral nervous system Location: Peripheral nervous system. Structure: Made of axons, connective tissue layers (endoneurium: axon is surrounded by it , perineurium: bundle of axons are surrounded by it, epineurium: whole nerve trunk is surrounded by it), and blood vessels. It gets myelination by Schwann cell   Function: Carries sensory signals to the CNS (afferent) from peripheral part of body or motor signals carry from from the CNS (efferent) to target organs like skeletal muscle, cardiac muscle, smooth muscle or glands Example: Sciatic nerve, median nerve, except optic nerve (though optic nerve is technically part of CNS in develop...
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Easy and brief difference between male and female pelvis

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Difference between male and female pelvis Topics male pelvis female pelvis subpubic angle 50° to 60° 80° to 85° ischiopubic rami everted and rough thinner and not everted ischial spine inverted and less widely apart everted and wider apart greater sciatic notch is narrower and 50° wider and 75° sacral promontory more project anteriorly less projection transverse diameter situated nearer to sacral promontory situated away from the sacral promontory body of the 1 st sacral vertebra forms more than one third of the base forms one-third or less of the base pelvic cavity is more longer and conical is more shorter and cylindrical pelvic outlet smaller than the inlet wider than the male chilotic line sacral part is longer than the pelvic part pelvis part is longer than the sacral part we...
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Thoracolumbar fascia

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Difference between false ligament of liver and true ligament of liver

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Difference between false ligament of liver  and true ligament of liver false ligament of liver  true ligament of liver  They are peritoneal folds They are remnant of fetal structures Usually it has two layers It is a cord like structure It is formed by simple squamous epithelium with little connective tissue It is formed by connective tissue One ligament continuous with other There is no continuation with each other Example : ·         Falciform ligament ·         Coronary ligament ·         Right triangular lig ·         Left triangular lig ·         Lesser omentum Example : ·         Ligamentum teres hepatis ·  ...
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Difference between superficial and deep inguinal ring

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Difference between superficial and deep inguinal ring Superficial  inguinal ring Deep inguinal ring It is an oblique triangular gap in the aponeurosis of external oblique abdominis It is formed by an oval gap in the fascia transversalis It is situated 1.25cm above and lateral to pubic crest It is situated 1.25cm above the mid inguinal point which is a mid point between the anterior superior iliac spine and symphysis pubis It is palpable in normal condition It is not palpable It forms exit of inguinal canal It forms the entrance of the inguinal canal It is situated below and medial to the inferior epigastric artery It is situated above and lateral to the inferior epigastric artery It is smaller in female   It is larger in male
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Difference between anterior and posterior part of rectus sheath Topics Anterior part of rectus sheath Posterior part of rectus sheath Above costal margin This part of rectus sheath is only formed by single aponeurosis. The aponeurosis of External oblique abdominis No rectus sheath Related with costal cartilage From costal margin to arcuate line This part of rectus sheath is formed by two aponeurosis. The aponeurosis of External oblique abdominis and anterior layer of aponeurosis of internal oblique abdominis This part of rectus sheath is formed by two aponeurosis. The aponeurosis of External oblique abdominis and posterior layer of aponeurosis of internal oblique abdominis Below the arcuate line (this line is situated midway between umbilicus and upper surface of pubis symphysis ) This part of rectus sheath is formed by three aponeurosis. The aponeurosis of External oblique abdominis, internal oblique abdominis and transverses abdominis No rectus sheath Related with fascia transversalis

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Difference between anterior and posterior part of rectus sheath Topics Anterior part of rectus sheath Posterior part of rectus sheath Above costal margin This part of rectus sheath is only formed by single aponeurosis. The aponeurosis of External oblique abdominis  No rectus sheath Related with costal cartilage From costal margin to arcuate line This part of rectus sheath is  formed  by two  aponeurosis. The aponeurosis of External oblique abdominis  and anterior layer of aponeurosis of internal oblique abdominis This part of rectus sheath is  formed  by two  aponeurosis. The aponeurosis of External oblique abdominis  and posterior layer of aponeurosis of internal oblique abdominis Below the arcuate line (this line is situated midway between umbilicus and upper surface of pubis symphysis )  This part of rectus sheath is formed by th...
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