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What is the relationship between the surface area and the volume of a cell as one increases or decreases so does the other?
Remember that as the diameter of a spherical cell increases, the surface area increases as the square of the diameter, and the volume increases as the cube of the diameter, so volume increases much faster than surface area. The same principle applies for other shapes than spherical cells, but the math is more complicated.
As the diameter of the circle increases what happens to the circumference?
The circumference of a circle increases with an increase in the radius as it is directly proportional its radius.
When steadily flowing water flows from a larger diameter pipe to a smaller diameter pipe what happens to its pressure?
When steadily flowing water transitions from a larger diameter pipe to a smaller diameter pipe, its velocity increases due to the principle of continuity, which states that the flow rate must remain constant. According to Bernoulli's principle, as the velocity of the fluid increases, its pressure decreases. Therefore, the pressure in the smaller diameter pipe is lower than in the larger one.
Which one of the following wire gages has a diameter of 204.3 mils a?
The wire gauge that corresponds to a diameter of 204.3 mils is 4 AWG (American Wire Gauge). In mils, 1 AWG is approximately 0.46 inches or 460 mils, and as the gauge number increases, the diameter decreases. Therefore, 4 AWG, with a diameter of about 204.3 mils, fits this specification.
Where does regulation of peripheral resistance occurs most often?
Arterioles
Is the diameter of the lumen larger in arteries or in capillaries?
Arteries have the largest diameter, then arterioles, and last, capillaries.
Where are arterioles located?
Arterioles are small diameter vessels that branch off of your arteries. They inevitably connect arteries to capillaries. You can find them pretty much anywhere in your body
What are arterioles in the skin and digits?
It is basically a blood vessel (vein) except it is much smaller in diameter.
What controls the diameter of the arterioles and what do changes in diameter affect?
Arterioles are the smallest vessels of the arterial system, with a diameter of about 1/3 millimeter or smaller. There is much smooth muscle in their tunica media, which causes vasocontrictionwhen it contracts, and vasodilation when it relaxes. Such vasoconstriction and vasodilation plays two important roles in the cardiovascular system.controls of distribution of blood flow to different parts of the bodydetermines the total peripheral resistance
Does the blood pulsate in arterioles?
Yes, the blood does pulsate in arterioles, but the pulsation is less pronounced than in larger arteries. As blood moves from the arteries into the arterioles, the pressure and pulse wave diminish due to increased resistance and the smaller diameter of the vessels. Arterioles primarily regulate blood flow and pressure to capillaries rather than exhibit strong pulsatile flow.
What Site has the greatest resistance to blood flow?
The site with the greatest resistance to blood flow is the arterioles, which are small branches of arteries. Arterioles have a high resistance due to their small diameter and ability to regulate blood flow to tissues. This resistance plays a key role in maintaining blood pressure and distributing blood throughout the body.
What decreases blood flow through arterioles?
Vasoconstriction of an arteriole increases resistance and results in decreased flow through that particular arteriole.
Arteries branch into smaller vessels called?
Arteries branch into smaller vessels called arterioles. Arterioles are small diameter blood vessels that connect arteries to capillaries. They play a crucial role in regulating blood flow and blood pressure within the circulatory system.
Axon diameter increases noticeably at the nodes of ranvier What purpose does this serve?
the axonal diameter increases due to the myelin wraped tightly around the axon.
Know relationships and differences between Afferent vs efferent arterioles?
afferent glomerular arteriole a branch of an interlobular artery that goes to a renal glomerulus.efferent glomerular arteriole one arising from a renal glomerulus, breaking up into capillaries to supply renal tubules.Remember because they are arterioles NOT venules they they both carry blood away from the heart.
What is it called when a bone increases in size?
When the bone increases in diameter, it is called appositional growth.
How do muscle fibres in arteriole reduce blood flow to capillaries?
Muscle fibers in arterioles, known as smooth muscle, can contract or relax to regulate blood flow. When these smooth muscle fibers contract, the diameter of the arteriole narrows (a process called vasoconstriction), which increases resistance and reduces blood flow to the capillaries. Conversely, when they relax (vasodilation), the diameter increases, allowing more blood to flow. This regulation is crucial for maintaining blood pressure and directing blood to areas of greater metabolic need.
