URINARY SYSTEM INFORMATION- ANATOMY-LESSON 73

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ANATOMY OF THE URINARY SYSTEM:  Urinary system anatomy organs consists of Kidneys (two), Ureters (two), Urinary Bladder, and Urethra.
KIDNEYS:  Two bean-shaped organs located at the back of the abdominal cavity i.e. retroperitoneal area, which is on moreover side of the vertebral column in the lumbar region of the spine. The kidneys are fixed and set in a cushion of adipose tissue and surrounded by fibrous connective tissue for safeguard. The size of each kidney is fist-sized approximately and about 4 to 6 ounces of weight of each.

The kidneys consist of an outer cortex region (cortex means outer portion or bark or a tree) and an inner medulla region (medulla means core or inner portion). Hilum is a depression in each kidney on the medial margin of the kidney through which only blood vessels and nerves pass.

URETERS:

Each kidney has on long about 16 to 18 cm muscular tubes lined with mucous membrane. The put across the urine in peristaltic waves from the kidney to the urinary bladder.

URINARY BLADDER:

This is a hollow, muscular, distensible pouch or bag like structure in the pelvic cavity. It works as a short-term pool or reservoir for urine. The Trigone is a triangular space at the base of the bladder where the ureters enter and the urethra shows the way out.

URETHRA:
A membranous tube through which urine is released from the urinary bladder. The course of action of pushing out urine is called voiding through the urethra is called micturition. The external opening of the urethra is called the urethral or urinary meatus. There are some differences between male urethra and female urethra. In female, the urethra is roughly 1 ½ inches in length, positioning anterior to the vagina and vaginal meatus. The male urethra is about 8 inches long and extends downward through the prostate meatus at the top of the penis.
In the next post we will learn how the kidneys produce urine...ok
Come on..
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