You may be thinking of the blood capillaries. Like visking tubing, their walls are able to let substances diffuse in and out. This is also true of the cell membranes. However both of these are much more permeable than visking tubing. The kidney contains semi-permeable membranes which allow urea to pass through but not other substances such as proteins.
The Golgi apparatus is the part of the cell that modifies, sorts, and packages proteins into vesicles for transport outside of the cell. It acts as a processing and distribution center for proteins destined for secretion.
The nuclear membrane in the human body is similar to the skin, as it acts as a protective barrier that controls the passage of substances in and out of the cell nucleus, much like how the skin acts as a barrier for the rest of the body.
Yes, our bodies have cannabinoid receptors that are part of the endocannabinoid system, which plays a role in regulating various physiological processes.
The pinna, also known as the auricle, acts like a funnel by collecting and directing sound waves into the ear canal. It helps to amplify and localize sounds, allowing them to be processed by the inner ear.
Moles grow hair on their bodies as a natural part of their biology. The hair helps moles sense their surroundings and protect their skin.
capillaries in the villi
The kidneys act like a visking tubing in our body. They filter blood and selectively reabsorb substances to maintain the body's balance of electrolytes and fluid volume. This process helps remove waste products from the blood while retaining important nutrients.
The water in a Visking tube represents the bloodstream in the body. The selective permeability of the Visking membrane simulates the function of capillaries in the body, allowing only certain molecules to pass through, mimicking the exchange of substances between the blood and tissues.
The thalamus is the part of the brain that acts like a switchboard. The thalamus controls how the brain reacts to certain things like pleasure and pain.
The thalamus is the part of the brain that acts like a switchboard. The thalamus controls how the brain reacts to certain things like pleasure and pain.
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an atom
The ribcage acts as a cage and protects your vital organs.
The midbrain acts as a relay station.
An Atom
eye lashes
The handle acts like that.