Posts

Showing posts from August, 2019

Comparison between tract and nerve

-
  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...
Post a Comment
Read more

Difference between thermoregulatory sweating and emotional sweating

-
Difference between thermoregulatory sweating and emotional sweatin g  Thermoregulatory sweating Emotional sweating first occur on the forehead and scalp   face Rest of the body Lastly palms and soles First occur on the palms, soles & axilla It is control by cholinergic It is control by adrenergic portion of sympathetic nervous system  
Post a Comment
Read more

Difference between disruption and dysplasia

-
      Disruption : morphological alteration of already form structures due to destructive processes   . Example: amniotic band      Dysplasia : abnormal organization of cells. Example: congenital ectodermal Dysplasia    
Post a Comment
Read more

Difference between malformation and deformation

-
a)       malformation : occurred during organogenesis                                 caused by environmental & / or genetics b)          Deformation : mechanical forces that mold a part of fetus. Example: clubfoot    
Post a Comment
Read more

Difference between primary, secondary and tertiary ovarian follicle

-
Difference between primary, secondary and tertiary ovarian follicle  Primary follicle - follicular cell became cuboidal and zona pellucida begin to form Growing follicle: follicular cells forming the stratified layer of granulose cells and well-defined zona pellucida  Secondary follicle: fluid filled spaces developed within the granulosa cells .   Graafian follicle : single cavity formed within granulosa cell
1 comment
Read more

Difference between mRNA, tRNA and rRNA

-
Difference between mRNA ,  tRNA and  rRNA Messenger RNA (mRNA): it transfers genetic information from the nucleus to the ribosomes in the cytoplasm and also acts as a template for the synthesis of polypeptides. Transfer RNA: transfers activated amino acids from the cytoplasm to messenger RNA. Ribosomal RNA :   ( rRNA ) is responsible for the translation of mRNA to protein. it is the RNA component of the ribosome which is essential for protein synthesis in all living organisms. rRNA is the predominant RNA in most cells, composing around 80% of cellular RNA. Ribosomes are approximately 60% rRNA and 40% protein by weight.
Post a Comment
Read more