1 / 13

Lecture 18

Lecture 18. Circulatory System I. Blood. Matrix between the cells is liquid Hemopoiesis Process of formation of blood cells Tissue found in marrow cavity and spongy bone Yellow Red. Table 4.13. Blood Vessel Structure. Arteries Elastic, muscular, arterioles, capillaries Capillaries

london
Télécharger la présentation

Lecture 18

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lecture 18 Circulatory System I

  2. Blood • Matrix between the cells is liquid • Hemopoiesis • Process of formation of blood cells • Tissue found in marrow cavity and spongy bone • Yellow • Red Table 4.13

  3. Blood Vessel Structure • Arteries • Elastic, muscular, arterioles, capillaries • Capillaries • Most of exchange between blood and interstitial spaces (filled with interstitial fluid) occurs across the walls • Blood flows from capillaries to venous system • Aneurysm • Weak point in artery or wall of heart • May rupture (hemorrhage)

  4. Systemic Circulation: Arteries • Aorta • From which all arteries are derived either directly or indirectly • Parts • Ascending aorta, aortic arch, descending aorta (thoracic and abdominal)

  5. Branches of the Ascending Aorta • Coronary arteries • Supply the heart’s cardiac muscle with oxygen and nutrients Fig. 22.9

  6. Branches of the Aortic Arch Right common carotid artery Left common carotid artery Vertebral artery Left subclavian artery Right subclavian artery Brachiocephalic trunk • First branch • Brachiocephalic trunk • Right common carotid and right subclavian • Second branch • Left common carotid • Third branch • Left subclavian Aortic arch Descending thoracic aorta Fig. 23.12

  7. Review Question An interruption in blood flow that resulted in less blood reaching the right shoulder and right neck (but not affecting the opposite side) could indicate a partial blockage in the • Right subclavian artery • Brachiocephalic artery • Right common carotid artery • Ascending aorta • Coronary arteries

  8. Branches of the Aortic Arch:Head and Neck Arteries • Branches of common carotid arteries • Internal carotid arteries • External carotid arteries • Branches of the subclavian arteries • Left and right vertebral arteries • Internal carotids and vertebral arteries supply brain Internal carotid artery External carotid artery Common carotid artery Vertebral artery Brachiocephalic trunk Subclavian artery Fig. 23.10

  9. Branches of the Aortic Arch:Arteries of Upper Limb and Shoulder Subclavian artery Vertebral artery • Three major arteries • Subclavian • Axillary • Brachial • Subclavian is posterior to clavicle • Axillary is within axillary region (armpit) • Brachial is within brachium (arm) Axillaryartery Brachial artery Radial artery Ulnar artery Fig. 23.19

  10. Branches of the Descending Aorta: Arteries of the Abdominal Aorta Celiac trunk • Three major branches (in order from superior to inferior along abdominal aorta) • Celiac trunk • Superior mesenteric artery • Inferior mesenteric artery Right renal artery Left renal artery Superior mesenteric artery Descending abdominal aorta Inferior mesenteric artery Common iliac artery Left internal iliac artery Left external iliac artery Left femoral artery Fig. 23.12

  11. Branches of the Descending Aorta: Pelvis and Lower Limb Anterior view Posterior view • Abdominal aorta divides into: • Common iliac arteries • Common iliac arteries divide into: • External iliac arteries • Internal iliac arteries • Popliteal artery • Anterior and posterior tibial arteries Common iliac artery Internal iliac artery External iliac artery Femoral artery Popliteal artery Anterior tibial artery Posterior tibial artery Fig. 23.20

  12. Points to Remember • Arteries transport blood away from the heart • Branches of aorta supply heart, head and neck, shoulder and upper limb, trunk, abdomen, pelvis and lower limb

  13. Questions?

More Related