The small intestine can absorb nutrients such as carbs, lipids, proteins, iron, vitamins, and water.
Nutrients that are fat soluble are kept in adipose tissues. The chylomicrons in the small intestine absorb these nutrients into the lacteals, where they are then carried through the lymphatic system and discharged into the bloodstream.
Small intestine villi that line the walls absorb nutrients into lymphatic lacteals and capillaries of the circulatory system. Capillary beds and lacteal-like lymphatic channels can be found in villi. The lacteals take in fatty acids from the chyme after it has been broken down.
Following that, nutrients are absorbed through the small intestinal wall. The fat-soluble vitamins enter the lymph vessels after absorption before moving on to the bloodstream.
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Deep vein thrombosis (DVT) is the condition of having a blood clot attached to the wall of a deep vein.
<h3>What is a blood clot?</h3>
Blood clots form when certain components of your blood thicken and combine to form a semisolid mass. This process can be triggered by an injury or it can occur inside blood vessels that are not clearly injured.
DVT is an abbreviation for deep vein thrombosis, which occurs when a blood clot forms in the deep veins of the legs. PE stands for pulmonary embolism, which occurs when a blood clot forms in a pulmonary artery.
Blood clots are gel-like clumps of blood. They are beneficial when they form in response to an injury/cut to stops bleeding. They are harmful when they are formed inside vein in legs, lungs or brain. They cause stroke in brain.
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There are several ways selection can affect population variation:
stabilizing selection
directional selection
diversifying selection
frequency-dependent selection
sexual selection
As natural selection influences the allele frequencies in a population, individuals can either become more or less genetically similar and the phenotypes displayed can become more similar or more disparate. In the end, natural selection cannot produce perfect organisms from scratch, it can only generate populations that are better adapted to survive and successfully reproduce in their environments through the aforementioned selections.
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