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Veins of the head and neck

Blood from the brain and the superficial facial vein flow into each internal jugular vein    ( [link] ). Blood from the more superficial portions of the head, scalp, and cranial regions, including the temporal vein    and maxillary vein    , flow into each external jugular vein    . Although the external and internal jugular veins are separate vessels, there are anastomoses between them close to the thoracic region. Blood from the external jugular vein empties into the subclavian vein. [link] summarizes the major veins of the head and neck.

Major Veins of the Head and Neck
Vessel Description
Internal jugular vein Parallel to the common carotid artery, which is more or less its counterpart, and passes through the jugular foramen and canal; primarily drains blood from the brain, receives the superficial facial vein, and empties into the subclavian vein
Temporal vein Drains blood from the temporal region and flows into the external jugular vein
Maxillary vein Drains blood from the maxillary region and flows into the external jugular vein
External jugular vein Drains blood from the more superficial portions of the head, scalp, and cranial regions, and leads to the subclavian vein

Venous drainage of the brain

Circulation to the brain is both critical and complex (see [link] ). Many smaller veins of the brain stem and the superficial veins of the cerebrum lead to larger vessels referred to as intracranial sinuses. These include the superior and inferior sagittal sinuses, straight sinus, cavernous sinuses, left and right sinuses, the petrosal sinuses, and the occipital sinuses. Ultimately, sinuses will lead back to either the inferior jugular vein or vertebral vein.

Most of the veins on the superior surface of the cerebrum flow into the largest of the sinuses, the superior sagittal sinus    . It is located midsagittally between the meningeal and periosteal layers of the dura mater within the falx cerebri and, at first glance in images or models, can be mistaken for the subarachnoid space. Most reabsorption of cerebrospinal fluid occurs via the chorionic villi (arachnoid granulations) into the superior sagittal sinus. Blood from most of the smaller vessels originating from the inferior cerebral veins flows into the great cerebral vein    and into the straight sinus    . Other cerebral veins and those from the eye socket flow into the cavernous sinus    , which flows into the petrosal sinus    and then into the internal jugular vein. The occipital sinus    , sagittal sinus, and straight sinuses all flow into the left and right transverse sinuses near the lambdoid suture. The transverse sinuses    in turn flow into the sigmoid sinuses    that pass through the jugular foramen and into the internal jugular vein. The internal jugular vein flows parallel to the common carotid artery and is more or less its counterpart. It empties into the brachiocephalic vein. The veins draining the cervical vertebrae and the posterior surface of the skull, including some blood from the occipital sinus, flow into the vertebral veins. These parallel the vertebral arteries and travel through the transverse foramina of the cervical vertebrae. The vertebral veins also flow into the brachiocephalic veins. [link] summarizes the major veins of the brain.

Questions & Answers

what are Lifting techniques in nursing
stanley Reply
I learned that anatomy is the study of the human structure. the smaller ones can be observed by the assistance of a microscope
Hawa Reply
what are the disciplines of anatomy
Bint Reply
what is the difference between anatomy and physiology
Addai Reply
the structure of human body the function of human body
Addai
anatomy is study of structure off the body and physioly is the study off function of body eg git
Dr
study of structure of the human body and study of function off the body eg git
Dr
nice 👍
qaseh
what does anatomy deal with
Kigani
anatomy deala with study of human structure eg human skeltal syatem
Dr
explain proximal in terms of anatomy body planes and give examples
Kwasi
don't know
Addai
anyone here MLT
Hussain
anatomy is the study structure of the human body. physiology is the study of function and mechanism of the body
Hamdi
I don't get the consent wrll
Joana Reply
sorry
Dawood
what's pathology
SABINA Reply
the science of the causes and effects of diseases
Emmi
yes dear you right
Tabish
ryt
Hussain
is the study of the abnormalities and how they affect body functions often causing illness
Frimpong
type of anatomy
yuns
what are cells
Mwenya
Cells are the basic structural and functional unit of all living organisms which they exist from pre-existing cells that self replicate on their own.
Tantoh
Cell is the structural , Function and heritability unit of life .
Juna
What is the function of liver
Sagir
liver helps in detoxification of toxic substances in our body and metabolism of drugs
sai
what is septum sacroti
Soul
What drugs use to treat liver diseases
Sagir
like ursodioxycholic acid
sai
liver disease medications depend on the type of liver disease..cirrhosis of the liver, no alcoholic liver disease, hep b, hep c.
Maria
what causes thyphoid
casmir
Maria what is carcinoma
Soul
What is ursodioxycholic acid
Sagir
No alcoholic liver diseases and help b, help c
Sagir
carcinoma is a type of cancer. it starts in the tissue lining the organs such as the liver or kidneys
Maria
describe the urine formation
Sarah Reply
Body water
Kashif
the urine formation is described as the wrist fluid that comes out of body
Hellen
glomerular filtration, reabsorption, secretion.
Maria
nice
Hussain
good Hellen kehn
Dr
is it wast fluids or wrist?
Baldwin
how many bones does human have?
Akech
Good
Opeyemi
206
Emmi
about the urine formation Baldwin asked that is it wast fluid or wrist that comes out from the body
Frimpong
waste fluids.. Tubular Reabsorption: Glucose, Amino acids, Proteins, Vitamins, Lactate, Urea, Uric acid, NA+, K+, Ca2+, Mg2+, Cl-, HCO3-, H20 Tubular Secretions: Urea, Uric acids, Creatinine, H+, NH4+, K+ Each different section of the Nephron has a different mineral that absorbs or secrets
Emmi
thank you Emmi
Baldwin
No problem, Happy to help.. I have a photo of exactly which area does what but I don't think I can attach on this platform..
Emmi
***socratic.org/questions/how-is-urine-produced-in-the-kidneys On this web page if you stroll down, there is a picture describing it. its my favorite diagram. Very clear and informative
Emmi
how can we access another platform to share more information
Baldwin
if you copy and paste that url.. it'll take you to the website I mentioned
Emmi
done.....
Baldwin
define what is a port of entry for microorganisms?
Baldwin
A port of entry is specific to that microorganism. for example, a bacterial infection of the urinary tract would have the vaginal area as the port of entry.
Emmi
droplets from one person to another is one 👍
Maria
or you can say that a viral microbe/flu would have a port of entry through the nasal cavity, mouth, or eyes because it is part of the respiratory system.
Emmi
in children more then 206 and in young man 206
Dr
emmi,you losing me .,. please make me clear on the question👆
Baldwin
nice Emmi
Hussain
children have 300
Alem
is female circumcision possible
Soul
noo, there is no possibility for circumcision in females
sai
Carcinoma is abnormal division of cells in the body without control
DECONS
female circumcision is technically considered a human rights violation and done in some countries where they partially remove the external female genitalia.
Maria
then again tubal ligation, I believe is like female circumcision. they tie or burn your tubes and you won't be able to have kiddos. so yes, its possible.
Maria
ok and so I mean not having kids .just kidding there I'm going to sleep.
Maria
Maria madam thank you for sharing this information
Soul
hello
Dawood
what is single cell
Jimmy Reply
A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists of multiple cells. ... Many eukaryotes are multicellular, but many are unicellular such as protozoa, unicellular algae, and unicellular fungi.
Noor
Why is important to check if the blood if compatible before transfusion ?
Kelvin Reply
to avoid cases of intravenous clupping in blood which can be fatal....bcos blood is incopartable
John
Thank you.good answer
Kelvin
what are the clinical significant of thyroid gland
Jennifer Reply
what is a metabolism?
Kheth Reply
Metabolism is the sum total of all the chemical processes in the body. It is divided into an anabolic(building up) and catabolic(breaking down) metabolism)
Jonas
Oh ok
King
sir what is constructive and destructive metabolism
Soul
is anyone
Soul
Describe the system s that maintain the internal environment of a human body
Nora Reply
an organism is a living being that had a cellular structure and that can independently perform all physiological functions needed for life.
Nwecho Reply
a tissue is a group of similar cells that work together to perform a particular function
Nwecho
chemical level, cellular level, tissue level, organs level, organ systems, organisms
Nwecho Reply
they're reproduction but also produces hormones dus they're endocrine system
Nwecho
cells are smallest independent functional unit of a living organism
Nwecho
an organ is an anatomically distinct structure of the body composed of two or more tissue
Nwecho
an organ system is a group of organs that work together to perform a major function.
Nwecho
Structural Organization of the human body.
Tammy
very good
quophy
What is a cavity
Isaac Reply
Permanently damaged areas in teeth that develop into tiny holes
MASLAH
what is meant by epithelial tissue
Zahid

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Source:  OpenStax, Anatomy & Physiology. OpenStax CNX. Feb 04, 2016 Download for free at http://legacy.cnx.org/content/col11496/1.8
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