Nephridia
What are the 5 excretory organs?
Excretory Organs
Organs of excretion include
the skin , liver , large intestine , lungs , and kidneys
(see Figure 16.2. 2). Together, these organs make up the excretory system . They all excrete wastes, but they don't work together in the same way that organs do in most other body systems.
What are the excretory organs in birds?
The excretory system in the domestic fowl consists of
the two kidneys
, each with a ureter that carries the urine produced by the kidneys to the cloaca where it leaves the body.
How many hearts does the earthworm have?
Heartbeats: Worms don't have just one heart. They have
FIVE
! But their hearts and circulatory system aren't as complicated as ours — maybe because their blood doesn't have to go to so many body parts. Moving around: Worms have two kinds of muscles beneath their skin.
What are the excretory organs in insects and earthworms?
Malpighian tubules constitute the excretory organs of cockroach and other insects.
Nephridia
are the most generally found excretory organs in earthworms. Flame cells are the platyhelminth excretory organs. A gizzard is present in certain insects' food tube, helping to break food particles.
What organ removes salt from the body?
The kidneys
are two bean-shaped organs located on either side of the spine, just below the ribs. The kidneys filter wastes from the blood and help balance water, salt, and mineral levels in the blood. To do this, blood from the body enters the kidney. Inside the kidney, blood is filtered and waste is removed.
What are the main excretory organs?
- Skin. The skin performs its excretory function via the sweat glands. …
- Lungs. The lungs are very important excretory organs as they expel carbon dioxide from the body via exhalation. …
- Liver.
- Gallbladder. …
- Urinary Bladder. …
- Ureters. …
- Urethra. …
- Large Intestine.
How do kidneys clean the blood?
The kidneys receive a high blood flow and this is filtered by very specialised blood vessels. The fluid that is filtered is then adjusted by a
complex series of urine-disposing tubes called tubules
.
Why is bird poop white?
The answer lies in the fact that birds, unlike mammals, don't produce urine. Instead
they excrete nitrogenous wastes in the form of uric acid
, which emerges as a white paste. And uric acid doesn't dissolve in water easily. Hence its ability to stick to your windshield like blobs of white plaster.
Do humans have cloaca?
At one point in the development of the human embryo, there is a cloaca
. It is the far end of a structure called the hindgut. This structure then divides to form a rectum, a bladder, and genitalia. The presence of a cloaca is normal in many adult animals (birds, reptiles, amphibians, some fish, and even a few mammals).
Do birds have 2 kidneys?
A bird has paired kidneys
which are connected to the lower gastrointestinal tract through the ureters. … Unique to birds is the presence of two different types of nephrons (the functional unit of the kidney) both reptilian-like nephrons located in the cortex and mammalian-like nephrons located in the medulla.
Why do worms have 5 hearts?
An earthworm has five hearts that
are segmented and pump blood throughout its body
,” said Orsmond. She said their structure was provided by a “hydrostatic skeleton” coelomic fluid (fluid within the body cavity) held under pressure and surrounded by muscles. “There are over 5 500 named species of earthworms worldwide.
Do worms have genders?
Earthworms are
hermaphrodites
, meaning an individual worm has both male and female reproductive organs.
Do earthworms feel pain?
But a team of Swedish researchers has uncovered evidence that
worms do indeed feel pain
, and that worms have developed a chemical system similar to that of human beings to protect themselves from it.
Can you flush salt out of your body with water?
You can't simply dilute it or flush it out with water
. In a perfect world, your kidneys would simply remove any excess salt from the blood and excrete it in the urine.
What salt does to the body?
Your body uses salt
to balance fluids in the blood and maintain healthy blood pressure
, and it is also essential for nerve and muscle function.
