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What is the internal system of interconnected tubes and vessels called in some terrestrial plants?
The internal system of interconnected tubes and vessels in some terrestrial plants is called vascular tissue. This tissue system is responsible for transporting water, nutrients, and other substances throughout the plant.
Why do the spores of vascular plants have such a thick wall?
The wind enhances spore dispersal thereby enabling vascular plants to spread and reproduce in new habitats. The thick wall confers integrity, and the spore can survive harsh environmental conditions during propagation.
Referring to a state of insufficient vascular volume in the heart?
This condition is known as hypovolemia. It can lead to decreased blood flow to the heart, causing reduced cardiac output and potentially leading to shock if not promptly treated. Treatment typically involves fluid resuscitation to restore vascular volume and improve cardiac function.
How do nutrients get from soil to xylem?
roots hold a plant in place of the soil. like roots ,stems have vascular tissue. this helps support plants .the xylem and phloem in stems connect to those same tissues in the roots .together, the move food for the plant between roots and leaves.
Does chlorophyll transport sugars?
No, chlorophyll is responsible for capturing sunlight and assisting in photosynthesis, the process by which plants make their own food using sunlight, water, and carbon dioxide. Sugars produced during photosynthesis are transported throughout the plant by vascular tissues like phloem.
Is vascular relaxation part of hemostasis?
No, vascular relaxation is not part of hemostasis. Hemostasis refers to the series of steps that stop bleeding, including vasoconstriction, platelet plug formation, and coagulation. Vascular relaxation typically involves the widening of blood vessels, which is not directly related to hemostasis.
What is the first phase of hemostasis in which vasoconstriction occurs?
The first phase of hemostasis is vasoconstriction, which is the narrowing of blood vessels to reduce blood flow to the injured area. This helps to limit blood loss and initiates the process of forming a blood clot.
Does calcium has any role in vasoconstriction?
Yes, calcium plays a crucial role in vasoconstriction. It acts as a signaling molecule that promotes smooth muscle contraction in the blood vessels, leading to vasoconstriction. When calcium levels increase in the smooth muscle cells surrounding blood vessels, it triggers a series of events that result in the narrowing of the vessel, increasing vascular resistance and raising blood pressure.
Does adh cause vasoconstriction?
ADH does not exactly cause the vasoconstriction but increases the peripheral vascular resistancewhich results increases of arterial blood pressure
What chemical produces vascular spasms?
serotonin
Is Vasodilation is a widening of the lumen due to smooth muscle contraction?
No.Vasodilatation, ie, widening of vascular lumen is caused due to vascular smooth muscles' relaxation.While, vasoconstriction, ie, decrease in diameter of the lumen is caused due to smooth muscle contraction.
Which tissues are mainly responsible for vasoconstriction?
Smooth muscle cells within the walls of blood vessels are mainly responsible for vasoconstriction. When stimulated by various factors such as hormones or neurotransmitters, these smooth muscle cells contract, narrowing the diameter of the blood vessel and increasing vascular resistance. This process helps regulate blood flow and blood pressure in the body.
Why is the diastolic pressure always above zero?
The diastolic pressure is the pressure inside the arteries while the heart is at rest. The vascular walls maintain this pressure thru vasoconstriction. Zero blood pressure is not conducive to life.
What does a vascular plant need to have to be a vascular plant?
Vascular plants have lignified tissues that are used to get water, minerals, and other products through the plant. Lignin is a chemical compound that is found in the cell walls of plants.
What produces vasoconstriction?
Peripheral vasoconstriction is the tightening of the blood vessels, particularly the arteries. It is caused by smoking, drinking alcohol and coffee, as well as the intake of medicine such as antihistamine.
What is a vascular effect of histamine released from mast cells?
vasodialation
Which would have the greater effect on vascular resistance?
Vasoconstriction would have a greater effect on increasing vascular resistance compared to vasodilation. When blood vessels constrict, their diameter decreases, leading to increased resistance to blood flow. Conversely, vasodilation results in an expansion of blood vessel diameter, reducing resistance.
