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A pie graph showing the proportion of total body fluid in each of the body’s fluid compartments

This pie chart shows that about 55% of water in the human body is intracellular fluid. About 30% of the water in the human body is interstitial fluid. Most of the remaining 15% of water is plasma, along with a small percentage labeled “other fluid”.
Most of the water in the body is intracellular fluid. The second largest volume is the interstitial fluid, which surrounds cells that are not blood cells.

Extracellular fluid

The ECF accounts for the other one-third of the body’s water content. Approximately 20 percent of the ECF is found in plasma. Plasma travels through the body in blood vessels and transports a range of materials, including blood cells, proteins (including clotting factors and antibodies), electrolytes, nutrients, gases, and wastes. Gases, nutrients, and waste materials travel between capillaries and cells through the IF. Cells are separated from the IF by a selectively permeable cell membrane that helps regulate the passage of materials between the IF and the interior of the cell.

The body has other water-based ECF. These include the cerebrospinal fluid that bathes the brain and spinal cord, lymph, the synovial fluid in joints, the pleural fluid in the pleural cavities, the pericardial fluid in the cardiac sac, the peritoneal fluid in the peritoneal cavity, and the aqueous humor of the eye. Because these fluids are outside of cells, these fluids are also considered components of the ECF compartment.

Composition of body fluids

The compositions of the two components of the ECF—plasma and IF—are more similar to each other than either is to the ICF ( [link] ). Blood plasma has high concentrations of sodium, chloride, bicarbonate, and protein. The IF has high concentrations of sodium, chloride, and bicarbonate, but a relatively lower concentration of protein. In contrast, the ICF has elevated amounts of potassium, phosphate, magnesium, and protein. Overall, the ICF contains high concentrations of potassium and phosphate ( HPO 4 2 ), whereas both plasma and the ECF contain high concentrations of sodium and chloride.

The concentrations of different elements in key bodily fluids

This bar graph shows the concentration of several ions and proteins in intracellular fluid, interstitial fluid and plasma. The ions and proteins are categories on the X axis . The Y axis shows concentration, in milliequivalents per liter, ranging from zero to 160. Three different colored bars are shown above each compound on the X axis. One bar represents intracellular fluid (ICF), a second bar represents interstitial fluid (IF, which is part of ECF) and the third bar represents plasma (ECF). Intracellular fluid contains high concentrations of K plus and HPO four two minus. It has lower concentrations of MG two plus and protein, and negligible amounts of the other compounds. Interstitial fluid contains high concentrations of NA plus and CL minus, along with a smaller amount of HCO 3 minus, and negligible amounts of the other compounds. Plasma contains large concentrations of NA plus and CL minus, with smaller concentrations of HCO 3 minus and protein, and negligible amounts of the other compounds.
The graph shows the composition of the ICF, IF, and plasma. The compositions of plasma and IF are similar to one another but are quite different from the composition of the ICF.
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Watch this video to learn more about body fluids, fluid compartments, and electrolytes. When blood volume decreases due to sweating, from what source is water taken in by the blood?

Most body fluids are neutral in charge. Thus, cations, or positively charged ions, and anions, or negatively charged ions, are balanced in fluids. As seen in the previous graph, sodium (Na + ) ions and chloride (Cl - ) ions are concentrated in the ECF of the body, whereas potassium (K + ) ions are concentrated inside cells. Although sodium and potassium can “leak” through “pores” into and out of cells, respectively, the high levels of potassium and low levels of sodium in the ICF are maintained by sodium-potassium pumps in the cell membranes. These pumps use the energy supplied by ATP to pump sodium out of the cell and potassium into the cell ( [link] ).

Questions & Answers

what are the body plains
Sanjana Reply
median plane,transverse or horizontal plane and coronal or frontal plane
How do I summarize the whole of muscular system
Mary Reply
briefly explain the similarities between transcription and DNA replication
Emmanuel Reply
transcription copies DNA into RNA while replication makes another copy of DNA
A general explanation: Replication occurs when a copy of DNA is made. Transcription is the first step in the process of protein synthesis. Messenger RNA is made using a portion of the DNA molecule as a template.
please what group is this?
hello guys
Relationship between essential amino acids and immune response
transcription from DNA to rna involves the matching of the nucleotides represented by c,g, t and A, but where there is a t, it is replaced by a u- uracil
what is the main function of the pcn?
career in the health professions, respond appropriately to signs of illness, help you in your roles as a parent, spouse
Coach Reply
student would have an appreciation of the heart anatomy to give understanding of anatomy while opening ideas of function and physiology
study of the parts of the body
macro anatomy, study of big structures of the body that can be viewed with the naked eye
that is called gross anatomy
what is integumentry
Amiebo Reply
chemical level cell level tissue level organs level organ system organism
sam Reply
when you sitting close to a campfire your sense smell adapts the smell but when the trace of smoke is introduced into your environments it becomes unsual for you
I need to know mechanism of body fluid
OK but I need to know where are you coming from
ask how
oh ft, help out with integumentary system now
Pls give me a brief description of vetebra
Deborah Reply
7 cervical (c1 atlas and c2 axis help the neck rotate) 12 thoracic 5 lumbar 1 sacral and 2 coccyx
breakfast at 7, lunch at 12, and dinner at 5. sacrum holds 5, coccyx holds 4
really there's just one coccyx and sacrum
atlas like the Greek God holds the weight of the world on top of him
elasticity of the vagina
Mariam Reply
The vagina is an elastic muscular wall
It has I think squamous cuboidal or maybe columnar epithelium designed for secretion, expansion and friction.
how can you remember the integumentary system
Naomi Reply
integumentary system is the skin the skin is protection all the body and contain deid cells
how can you remember the formation of bone?
the largest organ of the body
skin is largest organ
what is the best way to remember the cranial bones or any other bones ?
skeletal system?
look at the diagram structure and then remember it considering it your own body i memorise like that
hi guys! do you have to remember ALL the structures of the bones- I mean every single hole, depression or tuberosity?
hey guz i hv to remember Immune antibodies and antigens how? i found it difficult
well, they are all grouped, aren't they? I mean they all come in series like H1, H2A, H2B and so on. In this case I learn the common part first and then that what's different
nd what about IgG , IgE etc.
the majors
the thin skin does not have stratum lucidium I believe
if u know the bones, the muscle has part of the name of the bone in it
epidermis, I believe epi means on top. dermis in the middle and hypodermis, hypo meaning below. the hypodermis is actually considered not part of the skin or int system
big sweet guys love candy = basale, spinosum, granulosum, lucidum ( only in thick skin), corneum
I love it ☝🏾
thank you Zara !
can anyone send diet plan for asthma patients
jam how are you
Hey guys l am Matrin
blood is a connective tissue which transport oxygen and other nutrients to body
Zara Reply
which type of protein is blood?
what is blood?
Masthan Reply
blood is a connective tissue which transport oxygen and nutrients to body
which type of protein is blood?
and what about its structure i think its Quartenary structure 🤔💭
yes it is
it is globular
a vascular structure compose of vessels.
what is the functions of lymph
moula Reply
what is plasma
Chukwu Reply
A plasma is a hot ionized gas consisting of approximately af a equal number of positive ly charged ionized and negative ly charged electron is called plasma.
what is an atomical position?
military position, body erect where by the body will be up straight..the cephalic and thoracic are straight
functions of plasma membrane
Dinyando Reply

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