In a rooted phylogenetic tree, each node ... phylogenetic tree that explicitly represents evolutionary time through its branch spans. A spindle diagram (often called
The first evidence of modern human traits, including increasing brain size and dependence on material culture shows up in Homo habilis. Even though they are species<span> of genus </span>Homo, they are not similar to people nowadays at all. <span>In </span>palaeoanthropology, these species were the first ones who left Africa and started to move and spread along Eurasia, which is one the main facts and characteristics of Homo habilis.
D) no change in cardiac output, increased heart rate, decreased stroke volume occurs after blood donation
Explanation:
When a person donates blood, there is a slight loss of blood volume or hypovolemia. This triggers the baroreceptors of the blood; although does not trigger the osmoreceptor.
The baroreceptor responses are according to the arterial pressure which rises momentarily and results in increased sympathetic activity with decreased vagal activity.
These changes will lead to vasoconstriction, reduced stroke volume, increased heart rate or tachycardia which helps to maintain the cardiac output.
The soreness at the venepuncture site on the skin is due to bruising which is common after any needleprick. applying cold pack, elevating and resting the arm.
In order to compensate for the fluid volume loss and avoid dehydration, one must take plenty of fluids before and after blood donation.
Answer: diabetes mellitus
Explanation:
This is a disease condition associated with elevated blood glucose levels.
It is due to abnormalities of the Pancreas. The pancreas coordinates two hormones INSULIN AND GLUCAGON in its cells.
INSULIN converts excess sugar to GLYCOGEN while GLUCAGON breaks down GLYCOGEN to sugar when blood glucose/glucose levels drops.
If the pancreas beta-cells of glucose are faulty, INSULIN fails to converts excess glucose to glycogen; therefore glucose builds up in the blood plasma,and failed to enter the needed cells. Large amount of glucose is wasted in urine.This is diabetes Mellitus.
The two types of diabetes are:
Type 1 and Type 2.
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
