Urine And Sweat-Excretory Products
Skin gives out sweat formed from salt water. Sweat glands produce sweat. It passes through sweat ducts which are finally excreted through sweat pores.
The excretory system helps in the removal of waste products, produced as a result of vital activities carried out in our body.
In the waste products stay in our body, they are harmful to our body. Therefore they are eliminated. Suck waste materials which are not required by our body are called excretory products.
Kidneys, lings and skin are the main excretory organs which aid in the elimination of excretory products containing nitrogenous materials.
Let know the excretory organs and the products eliminated by them.
Kidneys
Location of kidneys in man: In the abdominal cavity of our body, there are two kidneys, one on each side of the vertebral column towards the backside of the body.
Color and shape: They are reddish brown in color and bean shaped.
Internal structure of kidney: Numerous tiny tubules, called nephrons are present in kidneys.
Function of nephrons: They filter the blood and separate the impurities which are dissolved in water and excreted as urine.
The mechanism of urine excretion: After the urine is formed in the kidneys, it reaches urinary bladder through the ureters. This urine is stored in the bladder till it is full. The muscles of the bladder contracts and urine as a waste product is excreted though an external opening, urethra.
Among summer, rainy and winter seasons, in whish seasons the excretion of urine is more? In which season the excretion of urine is less. Why?
Lungs: They eliminate carbon dioxide and water vapor. This we can observe by blowing our air on a glass slide with mouth or nose.
Skin structure: we find hairs, sweat pores, sweat glands, etc., in the longitudinal section of the skin.
1) Function of sweat glands: They collect the impurities from blood and sweat is prepared.
2) Function of sweat duct and pores: The sweat formed passes through the duct and is excreted through sweat pores.
3) We find more sweat in summer and also when we run fast and do brisk action. Skin gives out more sweat. Why.
4) Purpose of sweating: Skin cools the body temperature by sweating. We understanding that skin excrete salt and water in the form of sweat through sweat pores. They are nothing but the opening of sweat glands continued as sweat.
Main points
A) The impurities, formed in the process of vital activities must be excreted.
B) The system excreting is called renal system.
C) Nephrons filter the impurities which are dissolved in water to form urine. Urine is formed from urea, uric acid, certain gasses and water.
D) Carbon dioxide and water vapor are excreted by lungs.
E) Skin gives out sweat formed from salt water. Sweat glands produce sweat. It passes through sweat ducts which are finally excreted through sweat pores.
F) The delicate and vital parts like heart, lungs and brain are protected by the skeleton.
G) The muscles present in our body help in different movements. More than 600 muscles are found in our body.
H) Take skin care, do daily bath wash clean with soap.
what are the different parts and function of excretory system?
parts-mouth,salivary glands,oesophagus,stomach,small intestine,large intestine,rectum,anus
functions:
mouth-chewing and swallowing
salivary glands-absorption of food for easy digestion
oesophagus-roll the food to stomach
stomach-absorb essential constituents
intestine-remove waste materials
rectum-store waste materials
anus-excrete the wastes.
parts and functions of excretory system?
ipyul
The excretory system is a biological system that removes excess, unnecessary or dangerous materials from an organism. It is responsible for the elimination of oxygen waste products of metabolism as well as other nitrogeneous materials. Since the normal operation of most biological systems creates waste, the excretory system is not necessarily distinct from other systems. Instead, it often represents the various excretory processes of several different systems.
Component organs
SKIN
The skin is another part of the excretory system: it eliminates sweat, that helps cool the body and regulate the concentration of salt. The salt helps evaporate the water, cooling off the skin.
LIVER
The liver is an organ of the digestive system. It also helps in excreting wastes from the body in a variety of processes. Laboratory analysis reveals a high concentration of a small organelle called a peroxisome, responsible for breakdown of several toxic substances. It also takes in nitrogenous wastes and converts them to urea to reduce their toxicity.
The liver absorbs drugs and other poisonous substances in the blood and changes their chemical structure to make them less toxic and easier to digest. This waste product is called bile and is excreted to the digestive tract, facilitating digestion of fats while also disposing of waste.it is highly metabolically active organ.liver is also a erythropoetic organ in newts
KIDNEYS
The key organs in the excretory system of vertebrates.The kidneys are placed on either side of the spinal column near the lower back. They are primarily responsible for filtering blood by removing nitrogenous wastes, though they also regulate blood pressure in a process called osmoregulation and also assist with the production of red blood cells.
What are the parts and functions of the Excretory system?
The excretory system gets rid off metabolic wastes after the breakdown of things such as fats and proteins. This system also helps in retaining the proper amount of things before they are excreted out of the body such as water and salt.
The parts of this sytem are the kidneys, lungs, liver, and skin.
The easiest example I can give you of the excretory system is your sweat glands!!
what are the parts and functions of the excretory system?
help i cant find this information any where!!!
The excretory system is the system of an organism’s body that performs the function of excretion, the bodily process of discharging wastes.
The Excretory system is responsible for the elimination of wastes produced by homeostasis. There are several parts of the body that are in this process, such as sweat glands, the liver, the lungs, and the kidney system. Since we are focusing on the formation of urine within the kidneys, we will simply overview the kidney’s role in excretion.
Every human has two kidneys. Each kidney is made up of three sections: the renal cortex, the renal medulla, and the renal pelvis. The blood arrives at the kidney via the renal artery, which splits into many afferent arterioles. These arterioles go to the Bowman’s Capsules of nephrons, where the wastes are taken out of the blood by pressure filtration. Peritubular capillaries also surround the nephron so substances can be taken in and out of the blood.
The renal cortex is the outer layer of the kidney and the medulla is the inner layer of the kidney. The renal pelvis takes urine away from the kidney via the ureter. Both of the ureters lead the urine into the body’s only urinary bladder, which expands and sends nerve impulses when full. From there, urine is expelled through the urethra and out of the body.
The excretory system is broken down into many parts: the urinary system, lungs, sweat glands and liver.
The urinary system contains the kidneys (which contain the nephrons), which help to excrete urine, which contains excess water and minerals that the body doesn’t need. The lungs help to excrete carbon dioxide from the bloodstream. Sweat glands excrete sweat (a mixture of water and sodium chloride) to help regulate temperature. The liver excretes bile for digestion, and also breaks down and excretes intoxicants to remove from the body.
how does skin function as part of the excretory system?
how are sweats formed and why?
how does sweat help clean out the waste?
sweat is formed in the pores of your skin. the process of sweating is mostly your body’s way of maintaining homeostasis by releasing heat in the form of water vapor. however, that sweat also contains some of the same acid found in urine, just a much smaller percentage.