A portal circulation system is a structure in which blood from capillaries travels through veins to reach another set of capillaries, without first traveling through the heart.

The hepatic portal system takes blood from the intestines directly to the liver. The liver then performs such functions as metabolizing nutrients and removing toxins. Blood leaves the liver by way of the hepatic vein, which enters the inferior vena cava.

Venae comitantes
there are some arteries that are accompanied (comitantes) by a pair of veins (venae)

- الاخوة كارامازوف

يذكرني بالفرنسي اللي درسناه ٦ سنين وتاليها متستفاد منه كلغة😂😂🌚💔

Epigenetic alterations are one of several reasons why identical twins are not identical. Even with identical raw genetic codes, differences in early environment, whether overly stressful or more positively enriching, can change their behaviors down the line as teenagers and adults.

- The psychopath inside

U should check out "epigenetics"

بغداد والشعراء والصور...

إنك متى رسمت لوحة أو كتبت قصيدة فقد غيرت العالم...
لم تغيره تماماً لكنك غيرته
لقد صار أجمل بمقدار لوحة
وصار مستحقاً أن تقاتل من أجله أكثر
ولو بمقدار لوحة

- تميم البرغوثي

"a society grows great when old men plant trees -the shade of which they know they'll never sit in"

- Ricky Gervais, (After life)

"يغدو المجتمع مزدهراً حينما يزرع العجائز أشجاراً يعلمون أنهم لن يجلسوا في ظلها"

- ريكي جيرفايس