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July 2014
26
It’s so good to be home. :)
Meet Sam! Or Sammy. She’s my not-so-baby-anymore Belgian Malinois! She gained weight since the last time we saw each other but she doesn’t tug me as powerful as before.
My dad says that she only follows me. Haha I giver her baths and treats after all. :))

It’s so good to be home. :)

Meet Sam! Or Sammy. She’s my not-so-baby-anymore Belgian Malinois! She gained weight since the last time we saw each other but she doesn’t tug me as powerful as before.

My dad says that she only follows me. Haha I giver her baths and treats after all. :))

#mariaakim   #dog   #belgian malinois   #sam   
July 2014
20
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biomedicalephemera:

Our Three (Brain) Mothers

Protecting our brain and central nervous system are the meninges, derived from the Greek term for “membrane”. You may have heard of meningitis - this is when the innermost layer of the meninges swells, often due to infection, and can cause nerve or brain damage, and sometimes death.

There are three meningeal layers: the dura mater, arachnoid mater, and pia mater. In Latin, “mater” means “mother”. The term comes from the enveloping nature of these membranes, but we later learned how apt it was, because of how protective and essential the meningeal layers are.

——————————————————-

  • The dura mater is the outermost and toughest membrane. Its name means “tough mother”.

The dura is most important for keeping cerebrospinal fluid where it belongs, and for allowing the safe transport of blood to and from the brain. This layer is also water-tight - if it weren’t, our cerebrospinal fluid (CSF) would leak out, and our central nervous system would have no cushion! Its leathery qualities mean that even when the skull is broken, more often than not, the dura (and the brain it encases) is not punctured.

  • The arachnoid mater is the middle membrane. Its name means "spider-like mother", because of its web-like nature.

The arachnoid is attached directly to the deep side of the dura, and has small protrusions into the sinuses within the dura, which allows for CSF to return to the bloodstream and not become stagnant. It also has very fine, web-like projections downward, which attach to the pia mater. However, it doesn’t contact the pia mater in the same way as the dura: the CSF flows between the two meningeal layers, in the subarachnoid space. The major superficial blood vessels are on top of the arachnoid, and below the dura.

  • Pia mater is the innermost membrane, which follows the folds (sulci) of the brain and spinal cord most closely. Its name means “tender mother”.

The pia is what makes sure the CSF stays between the meninges, and doesn’t just get absorbed into the brain or spinal cord. It also allows for new CSF from the ventricles to be shunted into the subarachnoid space, and provides pathways for blood vessels to nourish the brain. While the pia mater is very thin, it is water-tight, just like the dura mater. The pia is also the primary blood-brain barrier, making sure that no plasma proteins or organic molecules penetrate into the CSF. 

Because of this barrier, medications which need to reach the brain or meninges must be administered directly into the CSF.

Images:
Anatomy: Practical and Surgical. Henry Gray, 1909.

#reblog   #medicine   
July 2014
17

Nothing is more practical than finding God, that is, than falling in love in a quiet absolute, final way. What you are in love with, what seizes your imagination, will affect everything. It will decide what will get you out of bed in the morning, what you will do with your evenings, how you spend your weekends, what you read, what you know that breaks your heart, and what amazes you with joy and gratitude.

Fall in love, stay in love, and it will decide everything.

-Fr. Pedro Arrupe, SJ

#mariaakim   #love   
July 2014
17
Via   •   Source
July 2014
15
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What you allow, is what will continue.

July 2014
14

Pain everywhere. I thought the topic of pain stopped with the pathology exam earlier. Oops.

Exam muna.

#pain   
July 2014
06
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brigwife:

ohmywizardgodawhovian:

just expressing my anger

you forgot the most important one of all

brigwife:

ohmywizardgodawhovian:

just expressing my anger

you forgot the most important one of all

image

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