Answer:
The upper region of the body veins carries blood that has no oxygen to the heart through superior vena cava and the lower part of the blood with no oxygen will transfer to the heart with the help of superior vena cava.
In Right hand:
At first, blood in the palmar region or distal end of the arm deoxygenated blood from this side will go to the following manner -
right ulnar vein - to the right Axillary vein - to the right subclavian vein - Right internal jugular vein - right brachiocephalic vein and finally it reaches the superior vena cava of the heart.
The same pathway will take place on the left side of the upper region of the body.
Answer:
Explanation:
The population density of an area is a demographic tool used to measure the number of organisms or individuals in a particular area.
It is expressed as;
Population density = 
The unit is expressed as organisms/km²
An area with a high population density is often not desirable as it can lead to pressure on amenities and infrastructure.
Answer:
(A)
Explanation:
In question number one, it is important to understand that during exercise, the oxygen hemoglobin dissociation curve shifts to the right. This is also confirmed by the fact that the patient, Kira is also breathing slowly. CO2 builds up in the both as patients begin to hypo ventilating. Most likely this patient in in a state of respiratory acidosis. But, it is important to understand that when the curve shifts to the right in this situation, you have decrease affinity of Hb for O2, meaning that the O2 does not want to bind to the hemoglobin. It instead is gonna wanna go straight to the tissues so that the tissues can get oxygen during high exercise states like this one. If the tissues don't get oxygen then you would have elevated lactic acid production in the tissue and the body would go into a sever state of lactic acidosis. So during excercise and increased CO2 content in the blood due to hypoventilation post excercise, our body's natural mechanism is to dump all the oxygen we get directly to our tissues and bypass the hemoglobin that is circulating in our vessels. So that being said you should be able to answer the question above. The hemoglobin would be less saturated with o2 in this case.
Hope this helped !
Answer:
Selectively permeable or semipermeable means specific substances are allowed to pass through the plasma membrane.
Explanation:
The plasma membrane is selectively or semipermeable in nature because the plasma membrane allow only specific molecules such as nonpolar substances or hydrophobic substances such as steroidshormone to pass through it and prevent the passage of polar solute molecules such as water,glucose.
To transport these polar solutes across the membrane an additional protein is needed in case of transport of water channel protein is needed whereas in case of glucose transport carrier protein is required.
