Biology
Answer
Internally, each kidney is composed of an outer darker region called cortex and an inner lighter region called medulla. The medulla drains the urine into a funnel-shaped structure called the renal pelvis. Inside the kidney, there are millions of microscopic tubular structures called renal tubules or nephrons. The nephron is also called unit of kidney. Each nephron starts as a cup-like Bowman's capsule which continues behind as a narrow tubule. The tubule is convoluted and opens into a collecting duct. All the collecting ducts then open into the renal pelvis which leads into the ureter.
Below diagram shows the structure of the kidney:
Related Questions
Distinguish between the following pairs on the basis of the words indicated in the brackets [] :
Urinary bladder and urethra [Function]
Draw a neat diagram of the vertical section of a human kidney and label its five important parts : Capsule, Renal cortex, Renal medulla, Papilla of medulla and Renal pelvis.
Given alongside is the diagram of an organ system of humans. Study the same and answer the following questions :
- Name the organ systems shown completely and partially respectively.
- Label the guidelines 1 to 4.
- Name the muscular sheet which divides the thorax and abdomen.
- Mention the blood vessel which supplies blood from the heart to the kidney.
- Name the blood vessel which carries deoxygenated blood that is devoid of nitrogenous wastes.
The figure shown alongside represents a process for the treatment of a person. Study the same and answer the following questions.
- Name the process.
- In what condition of the patient, is this treatment suggested by the doctors ?
- What other kind of treatment is suggested by the doctors, if both kidneys fail to work ?
- Can a person survive normally with one kidney ?
- Write one important function of the Hemodialysis machine.