Cardiovascular System Flashcards by Ara Umlas

In closed circulatory system where does blood stays?

Blood vessels

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Blood is separated from?

body tissues

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This system has a heart that pumps blood through a
continuous circulation pattern.

Closed circulatory system

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Two parts of the circulatory system of frogs

cardiovascular system and
lymphatic system

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The main function of this system is to supply oxygen and nutrients to the tissues and to aid in the elimination of metabolic wastes

cardiovascular system

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The main function of this system is drain the remaining plasma to the heart

lymphatic system

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how many chambers does the heart of the frog has?

three

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situated mid-ventrally in the anterior part of the body cavity in between two lungs

Heart

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Describe the heart

dark red colored conical muscular organ

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how is the heart situated?

mid-ventrally

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Two membranes of the heart

inner epicardium and outer pericardium

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What do you call the space between two membranes enclosing the heart.

Pericardial cavity

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What fills the Pericardial cavity?

Pericardial fluid

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Functions of pericardial cavity

Protects the heart from mechanical injury
Keeps the heart moist
Allows the free movement during beating
Also keeps in keeping the heart suspended in its proper position

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Structure of the frog’s heart

triangular

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Anterior broader part of the frog’s heart

Auricles

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What separates the auricles?

Interauricular groove / septum

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How many chambers does auricle has?

two chambers

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posterior pointed part of the frog’s heart

ventricle

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number of chambers of the ventricle

one

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how is ventricle separated from auricle?

coronary sulcus

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What is the most important part of the heart?

Ventricle

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Describe the ventricle

thick muscular walls

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What are the two additional chambers of the frog’s heart?

sinus venosus and truncus arteriosus

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a tubular structure arise from the right side of the ventricle

truncus arteriosus

On the dorsal surface of the heart, what will fuse to form wide chamber

Two precaval and a postcaval

thin walled dark colored triangular structure which opens into the right auricle

Sinus venosus

receives deoxygenated blood from all parts of the body

Sinus venosus

How many branches does truncus arteriosus divides to have two branches to form aortic trunks

Two

Aortic trunk is consists of?

carotid arch systemic arch pulmonary arch

What consists the blood vessels

veins, arteries and capillaries

These are System of pipelines through which blood flow

Blood vessels

Blood vessels has three layers which are?

– tunica externa – tunica media – tunica intern

What is the direction of flow of all blood in veins

Towards the heart

Describe veins

thin walled and collapsible

What prevents the backflow of blood in veins?

semilunar valves

Pressure of blood flow in veins

very low pressure

like arteries but with a thin and more elastic wall and large lumen

Veins

What type of blood does veins carries?

deoxygenated blood

MAJOR VEINS (6)

- Precaval Vein or anterior vena cava - Postcaval Vein or posterior vena cava - Pulmonary Veins - Abdominal Vein - Hepatic Portal Vein - Renal Portal Vein

Formed by the union of 3 veins

Precaval Vein or anterior vena cava

What are the three veins of precaval

- External jugular vein - Innominate vein - Subclavian vein

most anterior formed by lingual vein and mandibular vein.

External jugular vein

formed by joining of brachial and musculocutaneous vein

Subclavian Vein

Formed by union of internal jugular vein and subscapular vein. runs dorsally

Inominate vein

This vein is near midline from tongue and floor of mouth

Lingual vein

This vein is lateral from lower jaw

Mandibular vein

This vein is from the arm

Brachial

This vein is anterior o skull

Internal jugular vein

vein that is lateral from lower jaw

mandibular vein

From muscles an skin on dorsal and lateral part of head and trunk

Subscapular vein

Formed by the confluence ofefferent renal veins and hepatic veins

Post caval vein

On from each lun, both enter left auricle just anterior to the sinus venosus

Pulmonary Veins

What are the major Veins?

Precaval Vein, Postcaval Vein, Pulmonary Vein, Absominal Vein, Hepatic Portal Vein, Renal Portal Vein

This is a vein formed by union of pelvic veins and vesicular veins

Abdominal vein

Posterior and coelum, each as branch from femoral vein

Pelvic vein

From the bladder, a portal system comprises veins that divide into capillarie within an organ before returning to th heart.

Vesicular veins

These are veins from digestive organs that join to form this

Hepatic portal vein

This runs laterally along each kidney and gives off several

Renal portal vein

This vein of the renal portal vein is formed from anterior side of the thigh

Femoral vein

This vein of the renal portal vein is formed from Posterior sid of the thigh

Sciatic vein

This vein of the renal portal vein is formed from The abdominal wall

Forso-lumbar vein

These are vessels that carry blood away from the heart

Arteries

Describe the arteries

Strong an thick walled vessels

Blood is trasported to different parts of the body with?

High pressre and great speed

Do arteries have valves?

What is the color of arteries?

Pinkish color

What type of blood do arteries carry?

Oxygenated blood.

What are the three major arteries?

- Common carotid artery - Pulmonary-cutaneous artery - Systemic Arch

What arch is the common caroti artery?

Anterior arch

2 divisions ofcommon carotid artery

External carotid artery Internal caroti artery

This artery is to tongue and floor of the mouth

External carotid artery

This artery is dorsal to posterior roof of the mouth

Internal carotid artery

This is the artery found at the roof of the mouth

Palatine artery

This is the artery found Into cranium to brain

Cerebral artery

This is the artery found at Eye to eye

Ophthalmic artery

Division of the pulmo-cutaneous artery

- Pulmonary artery - Cuaneous artery

Short arteries branching into the lung

Pulmonary Artery

Arteries from skin to back an side of the body and side of the head

Cutaneous Artery

This passes dorsally beside esophagus and turns posteriorly to unite with its mate and form dorsal aorta

Aortic arch or Systemic Arch

Vein Fromposteriorsideofthigh

Sciatic vein

This is an artery that is dorsal to larynx

Layngeal artery

Cardiovascular System Flashcards

(84 cards)