LECTURE TOPIC:THE VASCULAR SYSTEM

(circulatory system)

THE CIRCULATORY SYSTEMSystemic circuit

Pulmonary circuit

The circulatory system

BLOOD VESSELS:

ARTERIES

VEINS

ARTERY VEIN

ARTERI Vaso-Vasorum

arterial system

DIVISIONS OF AORTA:

1. Ascending aorta

2. Arch of aorta

3. Descending aorta

4. Abdominal aorta

Ascending aorta

Aortic archDescending aorta

Abdominal aorta

Thoracic aorta

20 am long,

Give rise into

Parietal and

visceral

Branches.

BRANCHES OF ASCENDING AORTA:

Right Coronary artery

Left Coronary artery

Branches of ascending aorta

RightCoronaryArtery

RightCoronaryArtery

BRANCHES OF RIGHT CORONARY ARTERY:

oPosterior inter-ventricular branch.

oMarginal branch.

BRANCHES OF LEFT CORONARY ARTERY:

Anterior inter-ventricular branch.

Circumflex branch.

ARCH OF AORTA BRANCH INTO:

(3 DIVISIONS)

1. Brachio-Cephalic trunk

2. Left common carotid

3. Left subclavian

Right common carotid

Right subclavian

Brachio-Cephalic trunk

Left common carotid Right common carotid

Left subclavianRight subclavian

ARTERIES THAT SUPPLY THE

HEAD AND NECK:

Right and Left common carotid artery

Vertebral artery

(Common carotid artery branch off near the

mandible into external and internal arteries)

External carotid

Internal carotid

Left common

carotid Right Common

carotid

Head and neck arteries

EXTERNAL CAROTID ARTERY SUPPLY:

o Throat

o Thyroid

o Tongue

o Face (except eyes, fore-head and nose)

o Ears

o Scalp

BRANCHES OF EXTERNAL CAROTID ARTERIES

INTERNAL CAROTID ARTERY SUPPLY:

oBrain

oEyes

o Fore-head

oNose

THE RIGHT AND LEFT VERTEBRAL ARTERIES:

Supply Neck and chest

Arise from subclavian artery

Pass through the transverse foramina (CVII – CI)

Enter the foramen magnum

Join the Circle of Willis though the basilar artery

Circle of Willis

ARTERIES THAT SUPPLY SHOULDER

AND UPPER LIMBS:

Right and left subclavian arteries

Axillary artery

Brachial artery Radial and ulnar arteries

Digital arteries

-------Palmar arterial arch

ABDOMINAL AORTA:(BRANCHES)

1. Celiac trunk.

2. Superior and inferior mesenteric arteries.

3. Renal arteries.

4. Gonadal arteries.

5. Common iliac arteries.

CELIAC TRUNK SUPPLY:

o Stomach

o Spleen

o Pancreas

o Liver

o Gall-bladder

SUPERIOR AND INFERIOR MESENTERIC ARTERY SUPPLY:

oPancreas,

o intestine

Pancreas

ARTERIES OF THE LOWER LIMBS:

Right and left external iliac

Femoral artery

Popliteus

Anterior and posterior tibial artery

Dorsal pedis

-------Dorsal pedis arch

VENOUS SYSTEM

I. Coronary sinus (from the heart wall)

II. Superior vena cava

III. Inferior vena cava

Coronary

Sinus

Coronary

Sinus

Ostium

Right

atrium

VEINS OF THE HEAD AND NECK:

I. External jugular

II. Internal jugular

III. Vertebral

EXTERNAL JUGULAR VEIN DRAIN THE:

oFacial region,

oScalp.

INTERNAL JUGULAR VEIN DRAIN:

The brain

MAJOR VEINS OF THE

SHOULDER AND UPPER LIMB:

In the region of shoulder, Axillary vein

receive blood from several regions.

AXILLARY VEIN RECEIVE BLOOD FROM:

1. Cephalic vein (lateral arm and fore-head)

2. Basilic vein ( medial arm and fore-arm)

3. Brachial vein

4. Radial vein

5. Ulnar vein

VEINS OF THE THORAX:

Azygos,

Hemi azygos

(empty into the superior vena cava)

VEINS OF THE ABDOMEN AND PELVIS:(EMPTY INTO THE INFERIOR VENA CAVA)

Hepatic vein

Renal veins

Gonadal veins

Right and left common iliac

HEPATIC PORTAL SYSTEM:

Begins and ends in capillaries,

Capillaries from digestive organs to

capillaries of the liver.

PORTAL VEIN RECEIVE BLOOD

FROM:

(Unpaired organs of the abdominal cavity)

1. Mesenteric veins

2. Gastric vein

3. Cystic vein

VEINS OF THE LOWER LIMBS:

Superficial

Deep

Superficial Veins:

Varicose veins

thank you for attention

THE END!