Urinary System Flashcards

1
Q

Approximately 12-cm long, 6-cm wide, and 2.5-cm thick in adults,

A

KIDNEYS

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2
Q

has an outer renal cortex, a darker stained region with many round corpuscles and tubule cross sections,

A

Parenchyma

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3
Q

an inner renal medulla consisting mostly of aligned linear tubules and ducts, which consists of 8-15 conical structures called

A

renal pyramids

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4
Q

all with their bases meeting the cortex (at the corticomedullary junction) and separated from each other by extensions of the cortex called

A

renal columns

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5
Q

Each pyramid plus the cortical tissue at its base and extending along its sides constitutes a

A

renal lobe

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6
Q

The tip of each pyramid, projects into a minor calyx that collects urine formed by tubules in one renal lobe

A

renal papilla

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7
Q

Each kidney contains 1-4 million functional units called

A

nephrons

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8
Q

each consisting of a corpuscle and a long, simple epithelial renal tubule with three main parts along its length

A

NEPHRON

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9
Q

Initial dilated part enclosing a tuft of capillary loops and the site of blood filtration

A

RENAL CORPUSCLE

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10
Q

Location of the Renal Corpuscle

A

Cortex
Glomerulus
Bowman’s capsule

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11
Q

a long convoluted part, located entirely in the cortex, with a shorter straight part that enters the medulla.

A

PROXIMAL TUBULE

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12
Q

Nephron Loop

A

LOOP OF HENLE

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13
Q

in the medulla, with a thin descending and a thin ascending limb.

A

LOOP OF HENLE

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14
Q

consisting of a thick straight part ascending from the loop of Henle back into the cortex and a convoluted part completely in the cortex.

A

DISTAL TUBULE

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15
Q

a short minor part linking the nephron to collecting ducts

A

CONNECTING TUBULE

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16
Q

In the glomerulus, where the blood enters

A

Afferent arterioles

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17
Q

In the glomerulus, where the blood exits

A

Efferent arteriole

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18
Q

What is the epithelial tissue of the Glomerulus

A

Stratified squamous epithelium

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19
Q

What type of capillaries are there in the Glomerulus?

A

Fenestrated capillaries

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20
Q

What is the epithelium of the Bowman’s capsule?

A

Simple squamous epithelium

21
Q

What type of capillaries are there in the Bowman’s capsule?

A

Fenestrated capillaries

22
Q

It has podocytes

A

Bowman’s capsule

23
Q

RENAL FUNCTION:

A

FILTRATION
TUBULAR SECRETION
TUBULAR REABSORPTION

24
Q

RENAL FUNCTION:

Water and solutes

A

FILTRATION

25
RENAL FUNCTION: From blood vessels to tubular lumen
FILTRATION TUBULAR SECRETION
26
RENAL FUNCTION: by which water and solutes in the blood leave the vascular space and enter the lumen of the nephron.
FILTRATION
27
RENAL FUNCTION: From blood vessels to tubular lumen
FILTRATION TUBULAR SECRETION
28
RENAL FUNCTION: by which substances move from epithelial cells of the tubules into the lumens, usually after uptake from the surrounding interstitium and capillaries.
TUBULAR SECRETION
29
RENAL FUNCTION: From tubular lumen to blood vessels
TUBULAR REABSORPTION
30
RENAL FUNCTION: by which substances move from the tubular lumen across the epithelium into the interstitium and surrounding capillaries
TUBULAR REABSORPTION
31
At the beginning of each nephron is a renal corpuscle, about 200 μm in diameter and containing a tuft of glomerular capillaries, surrounded by a double-walled epithelial capsule called the
glomerular (Bowman) capsule
32
forms the surface of the capsule
parietal layer
33
Between the two capsular layers is the _________, which receives the fluid filtered through the capillary wall and the visceral layer
capsular (or urinary) space
34
The visceral layer of a renal corpuscle consists of unusual stellate epithelial cells called
podocytes
35
From the cell body of each podocyte, several ______ extend and curve around a length of glomerular capillary
primary processes
36
Each primary process gives rise to many parallels, interdigitating secondary processes or _______. The _____ cover much of the capillary surface, in direct contact with the basal lamina.
pedicels
37
What is the epithelium of the Proximal Convoluted tubule?
Simple cuboidal epithelium
38
Where is the Proximal Convoluted Tubule located?
Cortex
39
Reabsorption of all organic nutrients, all proteins, most water, and electrolytes
PROXIMAL CONVOLUTED TUBULE
40
Secretion of organic anions and cations, H+, and NH4+
PROXIMAL CONVOLUTED TUBULE
41
Loop of henle:
1. Thin Limbs (Ascending & Descending) 2. Thick Ascending
42
What is the epithelium of the Thin Limbs (Ascending and Descending) of the Loop of Henle?
Simple squamous epithelium
43
What is the epithelium of the Thick Ascending of the Loop of Henle?
Simple cuboidal epithelium
44
Both the Thin Limbs and Thick Ascending is located at the
Medulla
45
Passive reabsorption of Na+ and Cl
Thin Limbs (Ascending & Descending)
46
Active reabsorption of various electrolytes
Thick Ascending
47
What is the epithelium of the Distal Convoluted Tubule?
Simple cuboidal epithelium
48
Reabsorption of electrolytes
Distal Convoluted Tubule