The effectiveness of certain anesthetics depends in part on their lipid solubility. why is this? lipid-soluble drugs trigger the opening of certain channels, which they can use to pass through the plasma membrane. the hydrophilic nature of lipid-soluble drugs speeds up their passage through the plasma membrane. the hydrophobic core of the phospholipid bilayer enables lipid-soluble substances to readily pass through the plasma membrane. polar substances, such as lipid-soluble drugs, have high solubility.

the hydrophobic core of the phospholipid bilayer enables lipidphospholid soluble sybstances to readily pass through the plasma membrane

the aorta is the large artery leaving the heart branches into smaller arteries, which eventually branch into capillaries.the arteries carry oxygen and nutrients away from your heart, to your body's tissues. the capillaries are small, thin blood vessels that connect the arteries and the veins. the statement that arteries carry oxygen-rich blood to capillaries is true. veins on the other hand are blood vessels that take oxygen-poor blood back to the heart.