1. Body systems
Equine II – 3.01

2. Urinary System
The urinary system is made up of the kidneys, ureters, bladder, and urethra, which filter the blood and dispose of waste products.
All the blood in the body passes through the 2 kidneys more than 400 times per day and is filtered of nitrogenous wastes each time.
The kidneys are from 6”-7” long, 4”-6” wide, about 2” thick, and are located on each side of the backbone at about the 18th rib

3. Urinary System
Millions of tiny nephrons in the outer cortex of the kidneys filter about 200 gallons of liquid per day, rejecting blood cells and proteins but permitting fluid salts and other chemical waste to pass through them.
The kidneys return about 198 gallons of the 200 gallons to the bloodstream, including salts, sugars, and most of the fluids.
The two gallons of waste fluid, urine, is collected in the inner portion of the kidney, the renal pelvis, and drained drop by drop through the ureters to the bladder.

4. Urinary System

5. Respiratory System
The respiratory system takes in oxygen and delivers it to tissues and cells and removes carbon dioxide from those same tissues and cells.
The lungs are the essential organ of respiration
Air is taken into the lungs were oxygen is removed by diffusion into the blood.

6. Respiratory System
Supporting parts of the respiratory system carry air to and from the lungs and include the nasal cavity, pharynx, larynx, trachea, and bronchi.
The pharynx is common to both the digestive and respiratory systems.
The larynx serves as the voice box, allowing equine to make sounds such as neighing, whinnying, or nickering and regulates the amount of air passing into or out of the lungs.
The trachea is a long tube connecting the larynx with the lungs and branches into bronchi in each lung containing minute air sacs called alveoli where the gaseous exchange of carbon dioxide and oxygen takes place between the circulating blood and air.

7. Respiratory System

8. Watch these short videos

9. Assignment
Both of you will draw/sketch the urinary tract and label each part. Be sure to give an explanation of which each part does. Make this colorful and fun! I would eventually like to hang them up on the wall to use with equine I!
You will do the same thing for the respiratory system. If you have questions, let me know!