Essay
BTEC Applied Science: Unit 20 Learning aim A
- Course
- Institution
BTEC Applied Science: Unit 20 Learning aim A composition of human blood. Achieved distinction.
[Show more]
Seller
Follow
Assignment24
Content preview
Unit 20ABlood is what we need to live. Blood is a constant circulating fluid which provides oxygen and
nutrition to the body's cells. Blood can also transport metabolic waste products away. There are
4 main components of blood: plasma, red blood cells, platelets and white blood cells.
Image Structure Function Normal range
in adults
Red blood Red blood cells are Three main men – 4.0 to
cells microscopic and purposes are served 5.9 x 10*12/L
have the by RBCs. They can
appearance of a transport oxygen women – 3.8 to
flat disk or from the lungs to 5.2 x 10*12/L
doughnut, which is tissues. The second
round with an one is used to
indentation in the transport carbon
center but is not dioxide from tissues
hollow. White and into the lungs.
blood cells have a Blood antigens will
nucleus, but red be visible on the
blood cells do not, surface of the third
which makes it one.
easier for them to
change shape and
move around your
body.
White White blood cells Your body is 4,500 to 11,000
blood are normally protected against WBCs per
cells colorless, but when infection by white microliter
they are viewed blood cells. White
under a microscope blood cells identify
and dyed, they can sites of infection as
appear a very light they circulate in the
pink color. These bloodstream and
minuscule cells are tissues, act as
round and have a generals to alert
distinct center other white blood
membrane cells to sites of
(nucleus). infection, and
protect the body
from attack by
unknown microbes.
, An army of white
blood cells fights off
invaders by creating
antibody proteins
that bind to and kill
the microbes when
they arrive.
Platelets In addition to The primary 150,000 to
having function of platelets 450,000
mitochondria, a is to prevent and platelets per
microtubular and stop bleeding. microliter of
actin cytoskeleton, When blood vessels blood
glycogen granules, are damaged, the
some Golgi, and body signals
ribosomes, platelets to migrate
platelets do not to the site of injury.
have a nucleus. When platelets
reach the site, they
clump together to
form a clot that
helps stop bleeding.
Plasma Water makes up Redistributing water 6 to 8 g/dL
about 90% of the to the parts of your
total volume in body that need it is
plasmas, which what plasma does.
consist of ions, helping to exchange
proteins, nutrients, oxygen and carbon
waste products, dioxide while
and dissolved delivering
gases. Along with hormones,
albumin, ions, nutrients, and
proteins, and other proteins to various
molecules found in body parts.
plasma are preventing the
important for collapse or clogging
maintaining the pH of blood vessels.
and osmotic
balance of blood.
Leukocytes Diagram Structure Function Normal Diseases
range associated
, Lymphocytes Lymphocytes The immune system between - Hepatitis
are spherical is made up of cells 1,000 A
cells with called lymphocytes and - Hepatitis
only a single that move through 4,800 B
nucleus. The the blood. Her two lymphoc - Hepatitis
nucleus will main categories of ytes per C
occupy most lymphocytes are T microlite - HIV
of the cell’s cells and B cells. r (µL) of - Acute
volume. Can Invading viruses and blood. lymphocy
also stain bacteria can be tic
purple killed by antibody leukemia.
molecules that
generate B cells. T
cells are the
immune system's
first line of defense
against foreign
invaders. It also
produces cytokines,
biological factors
that help activate
other components
of the immune
system.
Neutrophils Neutrophils Their main function between - Hepatitis
have nuclear is to prevent 2,500 A, B, or C
lobes which infection in the and - HIV/AIDS
can increase body by engulfing 7,000 - Sepsis
with age. and destroying neutroph - Bone
Also, they invading pathogens. ils per marrow
have pale Neutrophils belong microlite failure
lilac granules to a group of white r of - Aplastic
in a standard blood cells called blood anemia
blood smear. granulocytes and - Leukemia
are made from stem
cells in the bone
marrow.
Monocytes Monocytes Monocytes are very 0.2 to - multiple
have a effective phagocytic 0.95 x sclerosis
horseshoe – cells which will 10*3 mcL - tumor
shaped engulf pathogens. metastasis
nucleus. They Monocytes can also - Liver
are the serve as APCs for fibrosis,
largest other functions in atheroscle
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Assignment24. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.53. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
53022 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now