Countercurrent Exchange

Countercurrent exchange is used extensively in biological systems for a wide variety of purposes. For example, fish use it in their gills to transfer oxygen from the surrounding water into their blood, and birds use a countercurrent heat exchanger between blood vessels in their legs to keep heat concentrated within their bodies. In biology this is referred to as a rete mirabile. Mammalian kidneys use countercurrent exchange to remove water from urine so the body can retain water used to move the nitrogenous waste products.

Countercurrent heat exchange (CCHE) is a highly efficient means of minimizing heat loss through the skin's surface because heat is recycled instead of being dissipated. This way, the heart does not have to pump blood as rapidly in order to maintain a constant body core temperature and thus, metabolic rate.

Category:

Comedy

Tags:

• countercurrent
• exchange

[rachelpresas]

lmfao.... this is sad... all i wanted was to understand the blood/oxygen exchange in gills and this is what i got....

[Baby8684]

at 2:30 am this is exactly what I needed right before my bio final

[ashisluvnit]

This is hilarious. Definitely a good study break video. :) Thanks boys.

[4girlshatinonyou]

@rachelpresas samesies.

[ballinbabygurl4sho]

thats hilarious but it actually helped me on my ecology exam lol

[edwinallston]

i memorized this whole song

wow thanks

[poletik]

GOLD!!!! f-ing awsome!!! Am gonna spam this round uni for sure!

[AkoniLokepa]

My Professor sowed you video in class! hahahahaha!

[HiEndLive]

damn white bois