Blood from the heart exits the brachiocephalic artery and takes two main pathways to the right side of the head. One of these is the right common carotid artery which exits the brachiocephalic artery and then splits into the external carotid artery and the internal carotid artery. The external carotid artery has several branches, among them the facial artery, the superficial temporal artery, the maxillary artery, and the occipital artery. The internal carotid artery takes blood through the carotid canal of the skull and into the brain. The other main pathway of blood to the right side of the head is the vertebral artery which arises from the subclavian artery. The left side of the head has a similar pathway except that the left common carotid artery and the left subclavian artery arise from the aortic arch and not from the brachiocephalic artery. Label these vessels and color them in red.
Answer Key: a. Superficial temporal a., b. Occipital a., c. Internal carotid a., d. Vertebral a., e. Subclavian a., f. Brachiocephalic a., g. Thoracic aorta, h. Facial a., i. Maxillary a., j. External carotid a., k. Common carotid a., I. Aortic arch, m. Ascending aorta
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.