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Cardiovascular System

Facial Bones – What Bones Form The Face?

The paired bones of the face are the maxillae, palatine bones, zygomatic bones, lacrimal bones, nasal bones, and inferior nasal conchae. The single bones are the vomer and mandible. The maxillae (mak-sil’-e) form the upper jaw. Each maxilla is formed separately, but they are joined at the

Pulmonary Circulation

The lungs receive the entire output of the right ventricle. Consequently, pulmonary blood flow is equal to cardiac output, about 5 L/min. The normal transit time for blood through the pulmonary capillaries is about 0.75 seconds. Gas equilibration between the alveolar air and the pulmonary capillary takes

Vasa Vasorum

The Vasa vasorum is found in large arteries as well as veins like the aorta along with its branches. 3-dimensional micro-computed tomography has shown that there are three different types of Vasa vasorum in human arteries via various vascular beds: Vasa vasorum internae emerge directly from the


Hematopoiesis is the synthesis of blood cells. Pluripotent hematopoietic stem cells in the bone marrow divide and differentiate into erythrocytes, leukocytes, or megakaryocytes. Replication and differentiation are regulated by hormones, cytokines, and growth factors. The aggregate weight of adult bone marrow is 3 kg, comparable in mass

Types of Blood Vessels – Structure And Function of Arteries, Arte¬rioles, Capillaries, Venules, And Veins

There are three basic types of blood vessels: arteries, capillaries, and veins. They form a closed system of tubes that carry blood from the heart to the tissue cells and back to the heart. Comparison of Arteries, Capillaries, And Veins Type of Vessel Function Structure Arteries Carry

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