445103
Description
Mind Map by fairytalelatias, updated more than 1 year ago
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Created by fairytalelatias
over 11 years ago
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NEPHRON
- 1.RENAL CORPUSCLE
- made up of : GLOMELURUS [ PART OF BLOOD CAPILLARY]
and BOWMAN’S CAPSULE [PART OF NEPHRON ] LOCATED
IN CORTEX
- SMALL MOLECULES [ ABSORBED ] - WATER
(H2O ) - SMALL MOLECULES
- LARGE MOLECULES [ REMAIN IN BLOOD ] - LARGE PROTEINS
- BLOOD CELLS
- Filtrate : WASTE PRODUCT +
VALUABLE NUTRIENTS
- made up of : GLOMELURUS [ PART OF BLOOD CAPILLARY]
and BOWMAN’S CAPSULE [PART OF NEPHRON ] LOCATED
IN CORTEX
- 2. PROXIMAL CUMULUTED TUBULE
- made up of cuboidal cell [ numerous microvilli ]
- microvilli - increase surface are for reabsorbtion
- microvilli - increase surface are for reabsorbtion
- reabsorbs ( ELECTROLYTES , WATER , GLUCOSE , AMINO ACIDS , POLYPEPTIDES)
- ↑IN WASTES ↓ IN NUTRIENTS
- made up of cuboidal cell [ numerous microvilli ]
- 3. LOOP OF HENLE
- DESCENDING ( THIN SEGMENT ) MADE OF SQUAMOS EPITHELIAL TISSUE
- ↑ PERMEABLE IN WATER
- IMPERMEABLE TO SOLUTES
- FLUID MORE CONCENTRATED AS IT FLOWS
DEEPER IN THE MEDULLA
- ↑ PERMEABLE IN WATER
- ASCENDING – MADE OF CUBOIDAL EPITHELIAL CELLS
- THIN ↑ LIMB -Na+ & Cl- PUMPED OUT
OF TUBULE
- THICK ↑ LIMB -
FLUID LESS
CONCENTRATED AS
IT MOVES UP THE
TUBULE
- THIN ↑ LIMB -Na+ & Cl- PUMPED OUT
OF TUBULE
- DESCENDING ( THIN SEGMENT ) MADE OF SQUAMOS EPITHELIAL TISSUE
- 4. DISTAL CUMULUTED TUBULE
- MADE OF : EARLY → CUBOIDAL
EPITHELIAL CELLS LATE →
PRINCIPAL & INTERCALATED
CELLS
- • INTERCALATED CELLS RESPONSIBLE FOR
SECRETION OF H+ • PRINCIPLE CELLS (UNDER
HORMONAL CONTROL
- ALDOSTERONE - Na+ LEVEL IN THE
BLOOD ↓ ADH - DEHYDRATION
- ALDOSTERONE - Na+ LEVEL IN THE
BLOOD ↓ ADH - DEHYDRATION
- • INTERCALATED CELLS RESPONSIBLE FOR
SECRETION OF H+ • PRINCIPLE CELLS (UNDER
HORMONAL CONTROL
- SECRETE - IONS ,ACIDS,DRUGS,TOXINS
- REABSORBED - H2O , Na+ , Cl-
- MADE OF : EARLY → CUBOIDAL
EPITHELIAL CELLS LATE →
PRINCIPAL & INTERCALATED
CELLS
- 5. COLLECTING DUCT
- MEDULLA COLLECTING DUCT - PRINCIPAL & INTERCALATED CELLS
- REABSORBS & SECRETES WATER
AND UREA UNDER HORMONAL
CONTROL
- REABSORBS & SECRETES WATER
AND UREA UNDER HORMONAL
CONTROL
- CORTICAL COLLECTING DUCT – PRINCIPAL CELLS
- ALDESTERONE (√)
REABSORBS Na+
SECRETES K+ & H+
ALDESTERONE (X)
REABSORBS K+
- ADH (√) REABSORBS
MORE H2O
- ALDESTERONE (√)
REABSORBS Na+
SECRETES K+ & H+
ALDESTERONE (X)
REABSORBS K+
- MEDULLA COLLECTING DUCT - PRINCIPAL & INTERCALATED CELLS
- http://www.docenten.science.ru.nl/pklaren/42_A01/42_A01.swf
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