Mam Phys Flashcards

0
Q

Total body qater is less in

A

Females and obesity

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1
Q

Total body water

A

60% of the body weight

42L

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2
Q

A stable balance in the ecf

A

Input=output

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3
Q

Positive balance

A

Input exceeds output

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4
Q

Neg balance

A

Output exceeds input

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5
Q

Compensatory adjustments

A

Occur on the output side by urinary excretion

-to keep salts and acids within narrow homeostatic ranges

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6
Q

ICF compartment

A

One compartment

-67% of tbw (28L)

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7
Q

Ions in ICF

A

Low na, cl, ca

High k, mg, po4, protein

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8
Q

ECF compartment

A
  • 33% of TBW (14L)

- ISF+plasma

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9
Q

ISF compartment

A
  • 80% ECF (11.2L)
  • between cells
  • low protein
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10
Q

Plasma

A
  • 20% of ECF
  • clear fluid
  • noncellular
  • electrolytes
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11
Q

Ions in the plasma

A

High na, cl
Moderate hco3-
Low k, mg, ca, po4

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12
Q

Hematocrit

A

Packed rbc

  1. 42 males
  2. 38 females

0.5 polycythemi

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13
Q

Minor ecf compartment includes

A

Transcellular fluid and lymph

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14
Q

Barrier between plasma and isf

A

Blood vessel walls

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15
Q

Barrier between the ecf and icf

A

Selectively permeable plasma membrane

16
Q

The ecf is an intermediary between

A

Cells and the external env

17
Q

By regulating the plasma, ___ is also regulated

A

The volume of the isf

18
Q

Regulation of __ and __ are closely related

A

Ecf volume and osmolarity

19
Q

Regulation of ECF volume

A

Helps maintain blood pressure

20
Q

Shortterm control of bp

A

Baroreceptor reflex

Temporary/automatic shifts between the plasma and ISF

21
Q

Longterm regulation of bp

A

Control of urine output and thirst

22
Q

Regulation of ECF osmolarity is important for

A

Maintaining constant cell volume

23
Q

Salt

A

Has water holding power

Less salt in the ECF means loss of water