All mammals need to excrete because they need to get rid of carbon dioxide, water, and other, possibly harmful, substances from your body. The main organs in the excretory system are:
The lungs are an organ that diffuses gaseous wastes, such as carbon dioxide, from the bloodstream. All organism cells take oxygen through the passive diffusion from the blood stream. It uses it in its own metabolism, consequently producing carbon dioxide that will be further excreted when passing through the alveoli circulation. When exhaling, you remove carbon dioxide and water.
- 2 kidneys
- 2 ureters
- Bladder
- Urethra
- Sphincter muscle
- Renal artery and renal vein
The lungs are an organ that diffuses gaseous wastes, such as carbon dioxide, from the bloodstream. All organism cells take oxygen through the passive diffusion from the blood stream. It uses it in its own metabolism, consequently producing carbon dioxide that will be further excreted when passing through the alveoli circulation. When exhaling, you remove carbon dioxide and water.
There are 6 body levels that need to be controlled:
The body has many ways to remove waste. Hypothalamus contains receptors to control body temperature and water content and then sends nerve impulses to the skin and to the pituitary gland. It also monitors CO₂ levels. The lungs inhale oxygen and remove carbon dioxide. The kidneys remove urea in the urine. It also adjusts the water content in the blood.
The skin has a thermoregulatory centre that senses changes and sends nervous impulses to the skin. When your body is too cold the hairs on end stand to keep you warm. No sweat is produced and the blood supply to the skin closes off. When you’re too hot your hairs lie flat and sweat is produce which evaporates to cool you down. The blood supply to the skin opens up to release body heat.
- Removal of CO₂
- Removal of Urea
- Iron content
- Water content
- Sugar content
- Temperature
The body has many ways to remove waste. Hypothalamus contains receptors to control body temperature and water content and then sends nerve impulses to the skin and to the pituitary gland. It also monitors CO₂ levels. The lungs inhale oxygen and remove carbon dioxide. The kidneys remove urea in the urine. It also adjusts the water content in the blood.
The skin has a thermoregulatory centre that senses changes and sends nervous impulses to the skin. When your body is too cold the hairs on end stand to keep you warm. No sweat is produced and the blood supply to the skin closes off. When you’re too hot your hairs lie flat and sweat is produce which evaporates to cool you down. The blood supply to the skin opens up to release body heat.