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: are there 2 semilular valves in the heart


 for "are there 2 semilular valves in the heart":

1.
URL: https://my.clevelandclinic.org/health/body/17067-heart-valves
Title: 4 Heart Valves: What They Are and How They Work - Cleveland Clinic
Content: As your <b>heart</b> pumps blood, four <b>valves</b> open and close to make sure blood flows in the correct direction. As they open and close, they make two sounds that create the sound of a heartbeat. The four <b>valves</b> <b>are</b> <b>the</b> aortic <b>valve</b>, mitral <b>valve</b>, pulmonary <b>valve</b> and tricuspid <b>valve</b>. A <b>heart</b> murmur is often the first sign of a <b>heart</b> <b>valve</b> problem.

2.
URL: https://teachmeanatomy.info/thorax/organs/heart/heart-valves/
Title: The Heart Valves - Tricuspid - Aortic - Mitral - TeachMeAnatomy
Content: They are composed of connective tissue and endocardium (<b>the</b> inner layer of the <b>heart</b>). <b>There</b> <b>are</b> four <b>valves</b> of <b>the</b> <b>heart</b>, which are divided into two categories: Atrioventricular <b>valves</b>: <b>The</b> tricuspid <b>valve</b> and mitral (bicuspid) <b>valve</b>. They are located between the atria and corresponding ventricle. Semilunar <b>valves</b>: <b>The</b> pulmonary <b>valve</b> and ...

3.
URL: https://www.thoughtco.com/anatomy-of-the-heart-valves-373203
Title: AV and Semilunar Heart Valves - ThoughtCo
Content: <b>The</b> <b>heart</b> has two kinds of <b>valves</b>, atrioventricular and semilunar <b>valves</b>. These <b>valves</b> open and close during the cardiac cycle to direct the flow of blood through the <b>heart</b> chambers and out to the rest of the body. <b>Heart</b> <b>valves</b> <b>are</b> formed from elastic connective tissue which provides the flexibility needed to open and close properly.

4.
URL: https://www.kenhub.com/en/library/anatomy/heart-valves
Title: Heart valves anatomy: Tricuspid-aortic-mitral-pulmonary - Kenhub
Content: Second <b>heart</b> sound (S2) - closure of the semilunar <b>valves</b> Third <b>heart</b> sound (S3) - rapid ventricular filling; may be physiological ... <b>There</b> <b>are</b> two semilunar <b>valves</b>: on the right, <b>there</b> is the pulmonary <b>valve</b> at the root of the pulmonary artery. on the left side, <b>there</b> is the aortic <b>valve</b> found at the root of the ascending aorta. ...

5.
URL: https://en.wikipedia.org/wiki/Heart_valve
Title: Heart valve - Wikipedia
Content: A <b>heart</b> <b>valve</b> is a biological one-way <b>valve</b> that allows blood to flow in one direction through the chambers of the <b>heart</b>.Four <b>valves</b> <b>are</b> usually present in a mammalian <b>heart</b> and together they determine the pathway of blood flow through the <b>heart</b>. A <b>heart</b> <b>valve</b> opens or closes according to differential blood pressure on each side. [1] [<b>2</b>] [3]The four <b>valves</b> <b>in</b> <b>the</b> mammalian <b>heart</b> <b>are</b> two ...

6.
URL: https://www.medicalnewstoday.com/articles/heart-valves
Title: Heart valves: Diagrams, types, function, diseases, and more
Content: <b>The</b> four <b>valves</b> of <b>the</b> <b>heart</b> allow blood to flow through the <b>heart</b> <b>in</b> <b>the</b> right direction. The <b>valves</b> open or close each time the <b>heart</b> beats. Problems with the <b>heart</b> <b>valves</b> can lead to ...

7.
URL: https://www.kenhub.com/en/library/anatomy/heart
Title: Heart anatomy: Structure, valves, coronary vessels | Kenhub
Content: <b>There</b> <b>are</b> two sets of <b>valves</b>: atrioventricular and semilunar. The atrioventricular <b>valves</b> prevent backflow from the ventricles to the atria: The right atrioventricular/tricuspid <b>valve</b> is between the right atrium and right ventricle. It has three cusps/leaflets: anterior/anterosuperior, septal, and posterior/inferior.

8.
URL: https://my.clevelandclinic.org/health/body/22458-aortic-valve
Title: Aortic Valve: Function, Location &amp; Anatomy - Cleveland Clinic
Content: Your aortic <b>valve</b> is one of your four <b>heart</b> <b>valves</b>. It connects your: Left ventricle, the <b>heart</b> chamber that pumps blood from your <b>heart</b> to the rest of your body. Aorta, the artery that carries blood away from your <b>heart</b>. Your aortic <b>valve</b> is one of two semilunar <b>valves</b>. Semilunar <b>valves</b> connect your <b>heart</b> ventricles (lower chambers) and arteries.

9.
URL: https://bio.libretexts.org/Courses/Cosumnes_River_College/Introductory_Anatomy_and_Physiology_(Aptekar)/10%3A_Cardiovascular_System-_Heart_and_Blood_Vessels/10.05%3A_Cardiac_Cycle
Title: 10.5: Cardiac Cycle - Biology LibreTexts
Content: <b>The</b> second <b>heart</b> sound, S <b>2</b>, is the sound of the closing of the semilunar <b>valves</b> during ventricular diastole and is described as a "dub" (Figure \(\PageIndex{3}\)). In both cases, as the <b>valves</b> close, the openings within the atrioventricular septum guarded by the <b>valves</b> will become reduced, and blood flow through the opening will become ...

10.
URL: https://heartandvascular.smhs.gwu.edu/anatomy-and-function-heart-valves
Title: Anatomy and Function of the Heart Valves
Content: <b>The</b> <b>heart</b> consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). <b>There</b> is a <b>valve</b> through which blood passes before leaving each chamber of the <b>heart</b>. <b>The</b> <b>valves</b> prevent the backward flow of blood. These <b>valves</b> <b>are</b> actual flaps that are located on each end of the two ventricles (lower chambers of the <b>heart</b>).

11.
URL: https://www.urmc.rochester.edu/encyclopedia/content.aspx?contenttypeid=90&contentid=p03059
Title: Anatomy and Function of the Heart Valves - Health Encyclopedia ...
Content: <b>Valves</b> <b>are</b> actually flaps (leaflets) that act as one-way inlets for blood coming into a ventricle and one-way outlets for blood leaving a ventricle. Normal <b>valves</b> have 3 flaps (leaflets), except the mitral <b>valve</b>. It only has <b>2</b> flaps. The 4 <b>heart</b> <b>valves</b> <b>are</b>: Tricuspid <b>valve</b>. This <b>valve</b> is located between the right atrium and the right ventricle ...

12.
URL: https://www.heart.org/en/health-topics/heart-valve-problems-and-disease/about-heart-valves/roles-of-your-four-heart-valves
Title: Roles of Your Four Heart Valves
Content: <b>The</b> four <b>valves</b> <b>in</b> order of circulation <b>are</b>: Tricuspid <b>Valve</b>. Has three leaflets or cusps. Separates the top right chamber (right atrium) from the bottom right chamber (right ventricle). Opens to allow blood to flow from the right atrium to the right ventricle. Prevents the back flow of blood from the right ventricle to the right atrium.

13.
URL: https://www.britannica.com/science/semilunar-valve
Title: Semilunar valve | Anatomy, Function, &amp; Diseases | Britannica
Content: <b>heart</b> <b>valve</b>. semilunar <b>valve</b>, either of two pocketlike half-moon-shaped structures located between the left ventricle and the aorta (aortic <b>valve</b>) and between the right ventricle and the pulmonary artery (pulmonary <b>valve</b>) of <b>the</b> <b>heart</b>. <b>The</b> semilunar <b>valves</b> permit blood to flow into the arteries from the ventricles and prevent the backward flow ...

14.
URL: https://en.wikipedia.org/wiki/Anatomy_of_the_human_heart
Title: Anatomy of the human heart - Wikipedia
Content: <b>There</b> <b>are</b> four major <b>valves</b> <b>in</b> <b>the</b> <b>heart</b>, two atrioventricular <b>valves</b> (connecting one atrium to a ventricle) and two arterial (or semilunar) <b>valves</b> guarding the outflow of blood from the human <b>heart</b>. Each atrioventricular <b>valve</b> (tricuspid and mitral <b>valves</b>) consists of the leaflets, the annulus, the tendinous cords, the papillary muscles, and ...

15.
URL: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4209403/
Title: Heart Valve Structure and Function in Development and Disease
Content: INTRODUCTION. <b>Heart</b> <b>valves</b> function to promote coordinated forward blood flow during the cardiac cycle. <b>Valves</b> <b>are</b> highly organized connective tissue structures populated with dynamic cell populations ().Valvulogenesis occurs after the initial stages of cardiogenesis as a result of endocardial cushion formation and extensive remodeling of the extracellular matrix (ECM) (<b>2</b>, 3).


Assistant: