• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
The Thoracic Cavity
The Thoracic Cavity

... The Lymphatic Vessels • Function: to collect excess tissue fluid collecting at arteriole end of capillary beds, and return leaked blood proteins to blood (maintain osmotic pressure needed to take up water into bloodstream) • Lymph is moved through vessels ...
intraembryonic mesoderm胚內中胚層
intraembryonic mesoderm胚內中胚層

... Primitive Cardiovascular System -Heart and great vessels are developed from cardiogenic area. -Heart tube心臟管 is fused from endothelial heart tube by the end of the 3rd week. Heart tube joined by vessels in the embryo, connecting stalk, chorion, and yolk sac form a primitive cardiovascular system. - ...
Blunt and penetrating neck injury
Blunt and penetrating neck injury

...  Degree of wound  Firearm  Low velocity ( < 1,000 ft/sec)  handgun 300-800 ft/sec  high velocity ( > 1,000 ft/sec)  shotgun 1,200 ft/sec , rifle 2,200 ft/sec ...
Ewald’s Laws - Fyzical | Balance
Ewald’s Laws - Fyzical | Balance

... stimuli are better vestibular stimuli than inhibitory ones – a phenomenon first described by Ewald (1892). • Ewald applied positive and negative pressure to each of the canals, making three observations that are now known as Ewald’s first, second, and third laws. ...
Anatomy and Physiology of the Liver
Anatomy and Physiology of the Liver

... ˆ Cooling the liver to hypothermic temperatures (0-4◦ C) lowers the rate of metabolism and the rate at which cellular components degrade. As a result, the need for nutrients and oxygen decreases and the organ can be preserved in a viable state for several hours (see further § 6.4). ˆ Although hypoth ...
interventional radiology: vascular diagnostic and therapeutic
interventional radiology: vascular diagnostic and therapeutic

... arch) in some patients may change the selective order of catheter placement. For example, when there is a bovine arch variant with the left [common] carotid arising from the innominate artery; this anomaly results in the left [common] carotid being a second order branch rather than a first order bra ...
OFA3 Definitions
OFA3 Definitions

... Amyl Nitrite – A clear, yellowish liquid that, when inhaled as a vapour, will dilate coronary arteries. It can be used in the treatment of cyanide poisoning. Anaerobic – Needing no air or free oxygen to live. Anatomical Position – The body standing erect, arms at the sides and palms forward. Anatomy ...
heart and blood vessels ppt
heart and blood vessels ppt

... drain from foot and empty into femoral vein ...
Vasculature and Lymphatics
Vasculature and Lymphatics

... Three main vessels emerge from the aortic arch. The first major branch off of the aortic arch is the brachiocephalic artery. This very short artery quickly splits into two other vessels: the right common carotid artery and the right subclavian artery. The left subclavian and left common carotid art ...
BIO 218 F 2012 CH 22 Martini Lecture Outline
BIO 218 F 2012 CH 22 Martini Lecture Outline

... Blood supply to the brain Blood in the vertebral arteries go to the brain via: Left and right vertebral arteries fuse to form the basilar artery Basilar artery branches many times in the area of the pons Basilar artery eventually forms the vessels of the cerebral arterial circle (circle of Willis) B ...
Biology 218 – Human Anatomy Lecture Outline Adapted from Martini
Biology 218 – Human Anatomy Lecture Outline Adapted from Martini

... Blood supply to the brain Blood in the vertebral arteries go to the brain via: Left and right vertebral arteries fuse to form the basilar artery Basilar artery branches many times in the area of the pons Basilar artery eventually forms the vessels of the cerebral arterial circle (circle of Willis) B ...
Preliminary study on Doppler ultrasonography of internal Pudendal
Preliminary study on Doppler ultrasonography of internal Pudendal

... All of them have the diameter of the artery above the ischiatic spine between 2,5mm and 3,7mm. The diameter tenders to decrease inside the ischiorectal fossa, between 1,5mm and 3mm in the pudendal canal . For most of them it is possible to follow the artery completely. Control side (safe): Pudendal ...
You can
You can

... this blood against the vessel walls creates systolic blood pressure. When the ventricles relax (diastole), the pressure drops to its lowest level. This lowest pressure mark is referred to diastolic pressure. Blood pressure is expressed by writing: systolic pressure/diastolic pressure, for example, n ...
Developmental Anatomy of the Retinal and Choroidal Vasculature
Developmental Anatomy of the Retinal and Choroidal Vasculature

... During the first gestational month, the posterior compartment of the globe contains the primary vitreous comprised of a fibrillary meshwork of ectodermal origin and vascular structures of mesodermal origin. At the 5-mm stage, the primitive dorsal ophthalmic artery sprouts off the hyaloid artery, whi ...
reverse sural fasciocutaneous flap
reverse sural fasciocutaneous flap

... dimensions and distance of the recipient site. The flap should be created slightly larger than the defect needing to be covered and when establishing the margins of the flap, it is vital to maintain enough overall length to prevent tension or kinking during rotation of the flap. Finally, the peronea ...
SECTION 2 Blood Supply Lymphatics Innervation
SECTION 2 Blood Supply Lymphatics Innervation

... portion of the cervix, whereas numerous other branches penetrate the body of the uterus to form the arcuate arteries. These encircle the organ by coursing within the myometrium just beneath the serosal surface. These vessels from each side anastomose at the uterine midline. From the arcuate arteries ...
Stress Fracture
Stress Fracture

... • Bone remodels under wolff’s law • Remodelling takes place via mechanotransduction • Remodelling is based on the force and load placed through the bone • If loading on a bone increases the bone will remodel itself to become stronger and resist the loading • If loading on a bone decreases the bone w ...
Anterior - Mr. Morrison's Biology Class
Anterior - Mr. Morrison's Biology Class

... the cycle the entire heart gets about fourtenths of a second to rest.  The walls of the heart are made up of three layers while the cavity is divided into four parts. The two upper parts of the heart are called the left and right atria and the two lower parts are the left and right ventricles. The ...
Embryology And Anatomy Of The Eye And Ocular
Embryology And Anatomy Of The Eye And Ocular

... • The palpebral conjunctiva is a transparent vascularized membrane covered by a nonkeratinized epithelium that lines the inner surface of the eyelids. • Continuous with the conjunctival fornices it merges with the bulbar conjunctiva before terminating at the limbus. ...
Biology 11 - Human Anatomy
Biology 11 - Human Anatomy

... D. Arteries of the Neck & Head 1. L. & R. ________ ________ arteries - both common carotid arteries are found on the sides of the _______ and supply blood to the _______. They branch at the larynx into the: a. __________ carotid artery - enters the skull through the carotid canal to supply the eye o ...
PowerPoint Lecture 12
PowerPoint Lecture 12

... Note positions of clavicles and ribs relative to lungs. ...
Circulatory System Part 3
Circulatory System Part 3

... Blood Vessels (dynamic structures that pulsate, as well as constrict and relax) 1. Main types of Vessels  Arteries – vessels through which blood is pumped away from the heart. Arteries branch into arterioles and finally into capillary beds that feed the tissues  From the capillary beds, blood is p ...
Unit 7 – Circulatory System
Unit 7 – Circulatory System

... A pulse can be felt in any artery lying close to the body surface by compressing the artery against firm tissue. Because it is so accessible, the point where the radial artery surfaces at the wrist is routinely used to take a pulse (the radial pulse). To find your own radial pulse, rest your right a ...
urdhwaga dhamani and its importance
urdhwaga dhamani and its importance

... systems supply the brain with blood: the internal carotid and basilar. The internal carotids and basilar arteries are connected via the circle of Willis, which allows blood to pass from one system to another in the event of blockage. In addition, the middle cerebral arteries provide most of the bloo ...
Hypothalamic vascularization in the common tree
Hypothalamic vascularization in the common tree

... bodies, tuber cinereum and infundibulum to which the stalk of the hypophysis is attached. Arterial supply of the hypothalamus The arteries supplying the hypothalamus in the tree shrew are all derived from the circle of Willis which is formed by the internal carotid artery (ICA) and the most rostral ...
< 1 ... 13 14 15 16 17 18 19 20 21 ... 24 >

Vascular remodelling in the embryo



Vascular remodelling is a process which begins at day 21 of human embryogenesis, when an immature heart begins contracting, pushing fluid through the early vasculature. This first passage of fluid initiates a signal cascade based on physical cues including shear stress and circumferential stress, which is necessary for the remodelling of the vascular network, arterial-venous identity, angiogenesis, and the regulation of genes through mechanotransduction. This embryonic process is necessary for the future stability of the mature vascular network.Vasculogenesis is the initial establishment of the components of the blood vessel network, or vascular tree. This is dictated by genetic factors and has no inherent function other than to lay down the preliminary outline of the circulatory system. Once fluid flow begins, biomechanical and hemodynamic inputs are applied to the system set up by vasculogenesis, and the active remodelling process can begin.Physical cues such as pressure, velocity, flow patterns, and shear stress are known to act on the vascular network in a number of ways, including branching morphogenesis, enlargement of vessels in high-flow areas, angiogenesis, and the development of vein valves. The mechanotransduction of these physical cues to endothelial and smooth muscle cells in the vascular wall can also trigger the promotion or repression of certain genes which are responsible for vasodilation, cell alignment, and other shear stress-mitigating factors. This relationship between genetics and environment is not clearly understood, but researchers are attempting to clarify it by combining reliable genetic techniques, such as genetically-ablated model organisms and tissues, with new technologies developed to measure and track flow patterns, velocity profiles, and pressure fluctuations in vivo.Both in vivo study and modelling are necessary tools to understand this complex process. Vascular remodelling is pertinent to wound healing and proper integration of tissue grafts and organ donations. Promoting an active remodelling process in some cases could help patients recover faster and retain functional use of donated tissues. However, outside of wound healing, chronic vascular remodelling in the adult is often symptomatic of cardiovascular disease. Thus, increased understanding of this biomedical phenomenon could aid in the development of therapeutics or preventative measures to combat diseases such as atherosclerosis.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report