Answer:
Kupffer cells, also known as stellate macrophages due to their particular structure while viewed under a microscope, were first identified by scientist Karl Wilhelm von Kupffer, after whom the cells were named, in 1876.
These cells, whose origin is in the yolk sack during fetal development, later on move to the liver where they will stay and further differentiate into their mature versions.
These cells are part of the liver cells, and are found particularly on the walls of the sinusoids, where they perform their two most important tasks. First, these cells are part of the immune system, as they are essentially macrophages. However, their role is pretty unique, as they are responsible not just for phagocytosis of invading bacteria, and other pathogens, and initiating immune responses, but also, this cell plays a role in decomposing red blood cells who are dying, and taking up the hemoglobin from them to further break that into reusable globin, and the heme group, from which iron is further extracted to be re-used and also to create bilirrubin, a part of bile.
Finally, these cells have been found to be connected to hepatic cirrhosis, as in their process of detoxifying ethanol, they produce toxins that force the liver cells to produce collagen, and thus to become fibrous.
The genetic material is the property of the patient, and yes they should have to give consent. it is biological data the scientist is tampering with, you know.
Answer:
The correct option is
Option (E) All the choices are membrane - bound organelles.
Explanation:
The membrane bound organelle are -
( A ) Lysosome - have digestive and destructive membranes .
( B ) Golgi apparatus - are membrane bound , and are responsible for transporting and modifying lipids and proteins .
( C ) peroxisome -
It is a membrane - bound organelle present in the cytoplasm of the cell, it plays a key role in the oxidation of some biomolecules.
( D ) Endoplasmic reticulum - is a membrane bound organelle , present in the cytoplasm , it usually has ribosomes on its outer surface , which helps in protein and lipid synthesis.
Hence,
all the mentioned organelles are membrane bound,
correct answer is ( E )
Answer:
Extreme dietary restriction that leads to significantly low body weight.
Explanation:
Anorexia Nervous can be said to be an eating disorder that makes people to obsess about their weight and what they eat.
It is usually characterised by a distorted body image, with an unwarranted fear of being overweight.
It's Symptoms includes trying to maintain a below normal weight through starvation or too much exercise.
It's Types major type is the Restriction type which is caused by maintaining very low calorie count , by eating only one meal a day.
Anorexia Nervosa is usually chronic and can last throughout life.
Answer:
The correct answer will be false
Explanation:
The somatic nervous system is a part of the peripheral nervous system which controls the voluntary action of the muscle which includes afferent and efferent neurons.
The sympathetic and parasympathetic nervous system are the parts of the autonomic nervous system which influences the function of the internal organs like smooth muscle and glands.
Thus, option false will be the correct answer.
