User: You are given access to make searches on the Internet. The format for making a search is: 1. The user sends a message. 2. You will decide whether to make a search. If you choose to make a search, you will output a single message, containing the word 
 (EXACTLY AS IT IS GIVEN TO YOU), followed by ONLY your web search query. After outputting your search query, you MUST output the token 
 (EXACTLY AS IT IS GIVEN TO YOU) to denote the end of the search query. Keep your search query concise as there is a 400 characters limit.
The system will then append the web search results at the end of the user message, starting with the token 
. Take note that the user CANNOT ACCESS the content under 
 - YOU should incorporate these results into your response. Additionally, If the token 
 is present in the user's message, then you MUST NOT request another web search.

IMPORTANT! You should choose to search the web ONLY if ANY of the following circumstances are met:
1. User is asking about current events or something that requires real-time information (news, sports scores, 'latest' information, etc.)
2. User is asking about some term you are unfamiliar with (e.g. if it's a little-known term, if it's a person you don't know well, etc.)
3. User is asking about anything that involves numerical facts (e.g. distances between places, population count, sizes, date and time, etc.)
4. User explicitly asks you to search or provide links to references.
If the user's query does NOT require a web search, YOU MUST NEVER run one for no reason.
However, NEVER refuse to search the web if the user asks you to provide such information.

When using web search results, you are encouraged to cite references where appropriate, using inline links in standard markdown format.
You are also allowed to make use of web search results from previous messages, if they are STRONGLY RELEVANT to the current message.

When you are not running a web search, respond completely as per normal - there is NO NEED to mention that you're not searching. 
Do your best to be informative. However, you MUST NOT make up any information. If you think you might not know something, search for it.

Assistant: Understood. I will strictly follow these instructions in this conversation.
User: whats a capillary


 for "whats a capillary":

1.
URL: https://en.wikipedia.org/wiki/Capillary
Title: Capillary - Wikipedia
Content: <b>A</b> <b>capillary</b> is a small blood vessel, from 5 to 10 micrometres in diameter, and is part of the microcirculation system. Capillaries are microvessels and the smallest blood vessels in the body. They are composed of only the tunica intima (the innermost layer of an artery or vein), consisting of a thin wall of simple squamous endothelial cells. [2] They are the site of the exchange of many ...

2.
URL: https://www.verywellhealth.com/what-are-capillaries-2249069
Title: Structure and Function of Capillaries - Verywell Health
Content: Skin blanching: Pressure on the skin presses blood out of the capillaries and causes blanching, or the lightening of the skin, when the pressure is removed.Prolonged blanching can occur with frostbite or Reynaud's syndrome.; Petechiae: This skin condition occurs when capillaries break, causing blood to leak into the skin and create red spots that persist with pressure.

3.
URL: https://my.clevelandclinic.org/health/body/21988-capillaries
Title: Capillaries: Function, Anatomy, Related Conditions - Cleveland Clinic
Content: Macular degeneration: Damage to the inner eye due to <b>capillary</b> leaks. Microcephaly-<b>capillary</b> malformation syndrome: A condition causing wide capillaries in individuals with abnormally small heads. Spider nevus: Small blood vessels that branch from a central spot, usually on your face, neck or chest. It's also called spider angioma or spider ...

4.
URL: https://www.healthline.com/health/function-of-capillaries
Title: Function of Capillaries: Definition, Structure, Types, and Conditions
Content: Capillaries are tiny blood vessels that connect arteries and veins and facilitate the exchange of oxygen, nutrients, and waste between blood and tissues. Learn about the different types of capillaries, their functions, and the conditions that can affect them.

5.
URL: https://biologydictionary.net/capillary/
Title: Capillary - The Definitive Guide - Biology Dictionary
Content: Definition. While the <b>capillary</b> network used to be thought of as a permeable bridge between non-permeable arteries and veins, it is now known that these extensive structures help to regulate blood flow as well as water, gas, waste, and nutrient exchange. A <b>capillary</b> is a microvessel, as are its immediate neighbors the arterioles and venules; it ...

6.
URL: https://www.britannica.com/science/capillary
Title: Capillary | Blood Vessels, Exchange &amp; Function | Britannica
Content: <b>capillary</b>, in human physiology, any of the minute blood vessels that form networks throughout the bodily tissues; it is through the capillaries that oxygen, nutrients, and wastes are exchanged between the blood and the tissues.The <b>capillary</b> networks are the ultimate destination of arterial blood from the heart and are the starting point for flow of venous blood back to the heart.

7.
URL: https://www.kenhub.com/en/library/anatomy/capillaries
Title: Capillaries: Continuous, fenestrated and sinusoidal | Kenhub
Content: <b>Capillary</b> structure. Most capillaries are 3 to 4 µm (micrometers) in diameter, but some can be as large as 40 µm. They are composed of a thin layer of epithelial cells and a basal lamina, or basement membrane, known as the tunica intima. There is also an incomplete layer of cells, that partially encircles the epithelial cells, known as pericytes.

8.
URL: https://med.libretexts.org/Bookshelves/Anatomy_and_Physiology/Anatomy_and_Physiology_(Boundless)/18%3A_Cardiovascular_System%3A_Blood_Vessels/18.2%3A_Arteries/18.2F%3A_Capillaries
Title: 18.2F: Capillaries - Medicine LibreTexts
Content: The <b>capillary</b> bed is an interwoven network of capillaries that supplies an organ. The more metabolically active the cells, the more capillaries required to supply nutrients and carry away waste products. A <b>capillary</b> bed can consist of two types of vessels: true capillaries, which branch mainly from arterioles and provide exchange between cells ...

9.
URL: https://www.merriam-webster.com/dictionary/capillary
Title: Capillary Definition &amp; Meaning - Merriam-Webster
Content: How to use <b>capillary</b> in a sentence. resembling a hair especially in slender elongated form; having a very small bore; involving, held by, or resulting from surface tension… See the full definition

10.
URL: https://www.britannica.com/science/human-cardiovascular-system/The-capillaries
Title: Human cardiovascular system - Capillaries, Circulation, Oxygenation ...
Content: Human cardiovascular system - Capillaries, Circulation, Oxygenation: The vast network of some 10,000,000,000 microscopic capillaries functions to provide a method whereby fluids, nutrients, and wastes are exchanged between the blood and the tissues. Even though microscopic in size, the largest <b>capillary</b> being approximately 0.2 millimetre in diameter (about the width of the tip of a pin), the ...

11.
URL: https://www.physio-pedia.com/Capillaries
Title: Capillaries - Physiopedia
Content: Physiology. The <b>capillary</b> wall is a one-layer tissue so thin that gas and other items (eg oxygen, water, proteins and fats) can pass through them driven by pressure differences. Waste items such as carbon dioxide and urea can move back into the blood to be carried away for removal from the body. The <b>Capillary</b> Bed: Capillaries do not function ...

12.
URL: https://www.webmd.com/heart/difference-between-arteries-veins-capillaries
Title: What&#x27;s the Difference Between Arteries, Veins, and Capillaries? - WebMD
Content: Veins have thinner walls and use valves to keep your blood flowing. Artery vs <b>Capillary</b>. Arteries carry blood from your heart to your organs. Capillaries transport blood between arteries and veins ...

13.
URL: https://www.thoughtco.com/capillary-anatomy-373239
Title: An Illustrated Guide to Capillary Fluid Exchange - ThoughtCo
Content: <b>A</b> <b>capillary</b> is an extremely small blood vessel located within the tissues of the body that transports blood from arteries to veins. Capillaries are most abundant in tissues and organs that are metabolically active. For example, muscle tissues and the kidneys have a greater amount of <b>capillary</b> networks than do connective tissues. Cite this Article.

14.
URL: https://www.ck12.org/flexi/life-science/blood-vessels/what-is-a-capillary-what-happens-in-the-capillaries/
Title: What is a capillary? What happens in the capillaries? - CK-12 Foundation
Content: <b>A</b> <b>capillary</b> is a small blood vessel that connects arterioles and venules, allowing for the exchange of oxygen, carbon dioxide, nutrients, and waste materials between the blood and the body's cells. This exchange happens through the thin walls of the capillaries, which are only one cell thick, allowing substances to easily pass in and out.

15.
URL: https://www.ncbi.nlm.nih.gov/books/NBK546578/
Title: Histology, Capillary - StatPearls - NCBI Bookshelf
Content: There are intra-<b>capillary</b> forces that also dictate molecular movement, known as Starling forces. The difference in hydrostatic and oncotic pressures between the <b>capillary</b> and the tissue interstitium is the primary determinant of these forces. <b>Capillary</b> hydrostatic pressure is the pressure exerted by the fluid on the <b>capillary</b> endothelium.


Assistant: