Answer:
Are small vessels within the tunica externa of large arteries and veins. (Ans E).
Explanation:
Vasa vasorum: It is defined as a complex system of small blood vessels that helps to provide the larger arteries and veins' walls. It is 3 different types in structure:
1) Internae: It is obtained from the artery lumen and later divide into the vessel wall.
2) Externae: It is obtained from the artery branches.
3) Vasorae: It is obtained within the artery vessel wall then leave into the lumen.
Vasa vasorum helps to provide nourishment which is necessary for growth and supply of blood for tunica media of large vessels and tunica adventitia.
Answer:
This exact same question is on my assignment and im in 6th grade..... so this should be easy for you.
Explanation:
But because im nice i will give you the answer. The answer is: In codominance, both alleles are expressed in the offspring while in incomplete dominance, the offspring demonstrates an intermediate form of the alleles from the parents.
Answer:
A. and D.
Explanation:
If we go horizontally, from the left to the right on the periodic table, the electronegativity increases.
If the radius is small, that means the electrons are closer to the nucleus, which makes them more electronegative.
Answer:
Bed bugs belong to the Cimicidae family (that's Latin for bloodsucking wingless bugs). They come in the order of Hemiptera.
Answer:
Autonomic regulation of heart is via two reflex centers that are found in medulla oblongata
Explanation:
Medulla oblongata contain long stem that makes the upper part of brain case and this is a cone shaped structure which is responsible for autonomic regulation like controlling heart rate,vomiting,respiration,breathing etc.
The heart rate is controlled by autonomic nervous system that are mainly sympathetic and parasympathetic nervous system that releases hormones like catecholamine (epinephrine and non epinephrine) which helps in controlling the heart rate.
Medulla oblongata mainly connects the brain with the spinal cord that are responsible for responsible for the autonomic functions which contain -
Controlling the ventilation via signalling system regulated by chemo receptors which detects change in acidity of the blood.
Acts on cardiovascular centers.
Controlling the reflex centers like vomiting,coughing,sneezing,swallowing etc.