0
An increased hematocrit indicates a higher ratio of RBC's in the blood. Any increase in cellular elements, whether WBC's, RBC's or platelets, will act to essentially mechanically "thicken" the blood viscosity, sort of like using a heavier grade oil in your car. Increased blood viscosity will increase peripheral resistance, as it becomes harder for the heart to circulate the thicker blood, especially in the capillaries.
What else can I help you with?
What change would you expect to happen in the hematocrit of a person who is dehydrated?
Hematocrit is a measure of the % of blood occupied by the Red Blood Cells (RBC) which carry oxygen. In the short term the hematocrit is affected by the % of water in the body, so if the person becomes dehydrated there is relatively less water than cells, so the haematocrit goes up.
Which of these best explains how mutation can be beneficial to an organism?
Mutation can introduce new genetic variations that can lead to advantageous traits, such as increased resistance to diseases or better adaptation to changing environments. This can give the organism a survival advantage and increase its chances of reproductive success, ultimately aiding in evolutionary change and diversification.
When do objects on the periphery of your vision become most noticeable?
Objects on the periphery of your vision become most noticeable when they move or change, as our eyes are more sensitive to motion and contrast in our peripheral vision.
Why are the arterioles known as resistance vessels?
A. They distribute blood to various parts of the body. B. They contain a large quantity of elastic tissue. C. The contraction and relaxation of the smooth muscle in their walls can change their diameter. D. Their prime function is the exchange of nutrients and wastes between the blood and tissue cells.
How did the fish's breathing rate change as the temperature changed?
As the temperature changed, the fish's breathing rate increased or decreased accordingly.
Does exercise Change in cardiac output or in peripheral resistance?
Both, peripheral resistance decreases and cardiac output increases.
How do blood pressure and total peripheral resistance change with exercise?
total peripheral resistance will decrease because of vaso dilation of local arterioles that are supplying the active muscles i.e,skeletal muscles. and blood pressure will increase for two reasons: increased cardiac output resulting from increased pumping activity of heart. because of vasoconstriction of arterioles every where else in the body
In the body what is the physiological cause of radii changes in blood vessels?
Vessel diameter can change quickly through casconconstruction or vasodilation. Most of the peripheral resistance occurs in arterioles (the small vessels of the arterial system). When these smooth muscles contract or relaz, peripheral resistance is either increased or decreased.Source: Modern Anatomy & Physiology by Ateegh Al-Arabi
What is the site that is major determine peripheral resistance?
The major site that determines peripheral resistance is the arterioles. These small-diameter blood vessels can constrict or dilate to regulate blood flow and pressure throughout the circulatory system. Their ability to change diameter significantly influences total peripheral resistance, impacting overall cardiovascular function.
What causes peripheral resistance?
Peripheral resistance is the force against blood flow. In most cases, an increase in peripheral resistance would be caused by an increase in vasoconstriction, which would decrease blood flow. Other factors can influence vasoconstriction, such as circulating angiotensin II levels, cortisol levels, drugs such as cocaine and other adrenergic agonists, blood volume, atherosclerosis, emboli, renal diseases and increased intra-cranial pressure. An increase in blood pressure will also be caused by vasoconstriction and the mentioned factors.
Will the current of circuit change on changing the ammeter resistance?
The accuracy of ammeter changes as the resistance is increased or decreased.AnswerThe simple answer is yes, it will change. However, whether it will be a perceptible change is another question. Ammeters are designed to cause the minimum change to the actual circuit current when they are inserted into a circuit.
What is the change in resistance of wire when half of its length is inc by 2 percent?
If half of its length is increased by 2%, then its entire length is increased by 1%.In order to know how this affects the wire's resistance, we'd want to be able toassume that its composition and cross-section are constant along its length. Thiscould be a risky assumption, especially since the length was increased ... possiblyby stretching the wire, which would certainly affect the cross section.But without overthinking the situation and making myself nervous about it, lets justassume uniform composition and cross-section along the entire length, throughoutthe observation period. Then its resistance also increases by 1%.
If A conductor has a resistance of 0.8 ohms what will happen to its resistance if the temperature is increased?
The resistance of a conductor normally increases with temperature. The increase in resistance is due to charged particles becoming more agitated and the number of particles going across a potential field at a given time period will be reduced (like in a traffic jam, the car engines are running but the cars are not going faster). The change in resistance per degree temperature change for a metal can be measured and are published.
What is constant resistance?
A resistance that doesn't change.
What change would you expect to happen in the hematocrit of a person who is dehydrated?
Hematocrit is a measure of the % of blood occupied by the Red Blood Cells (RBC) which carry oxygen. In the short term the hematocrit is affected by the % of water in the body, so if the person becomes dehydrated there is relatively less water than cells, so the haematocrit goes up.
Why does tungsten resistance change when it gets hotter?
The resistance of tungsten increases with temperature because as temperature rises, tungsten atoms vibrate with greater energy, impeding the flow of electrons. This increased vibration disrupts the flow of electrons, leading to a higher resistance in the material.
Does potential difference change with change in resistance?
Changing the potential difference in a circuit does not change the resistance. Rather, it changes the current.
