Lymph-vascular System Also called lymphatic system; aids blood system; consists off lymph spaces, lymph vessels, lymph glands and lacteals. Lymph is circulated through the lymphatic vessels and filtered by the lymph nodes. Filtering helps fight infection

Primary functions Carry nourishment from blood to body cells Act as a defense against invading bacteria Remove waste material from body cells to the blood Provide a suitable fluid environment for cells

Arteries of head, face & neck Common carotid arteries Main sources of blood supply to head, face and neck Located on either side of neck and divide into internal and external carotid arteries Internal carotid artery Supplies brain, eyes, eyelids, forehead, nose and internal ear External carotid artery Supplies anterior(front) parts of scalp, ear, face, neck and sides of head

Facial Artery Branches Also called eternal maxillary artery Supplies blood to lower region of face, mouth and nose

Facial Artery Branches Submental artery Supplies chin and lower lip Inferior labial artery Supplies lower lip Angular artery Supplies side of nose Superior labial artery Supplies upper lip and region of nose

Superficial Temporal Artery Branches Continuation of external carotid artery Supplies muscles of the front, side and top of head

Superficial Temporal Artery Branches Frontal artery Supplies forehead and upper eyelids Parietal artery Supplies crown and side of head Transverse facial artery Supplies skin and masseter Middle temporal artery Supplies temples Anterior auricular artery Supplies anterior part of ear

Other arteries and branches Occipital artery Branch of external carotid artery Supplies skin and muscles of scalp and back of head up to crown Posterior auricular artery Supplies scalp, area behind and above ear and skin behind ear Supraorbital artery Branch of internal carotid artery Supplies forehead and upper eyelid Infraorbital artery Supplies muscles of the eye

Veins of Head and Neck Internal jugular Most important veins of face and neck are parallel to arteries with the same name The blood returns to the heart from the head, face and neck through these two principal veins

Blood supply for Arm & Hand Ulnar arteries Supply the little-finger side of arm and palm of hand Radial arteries Supply the thumb side of arm and back of hand Most important veins are located almost parallel to arteries with the same names; veins lie nearer to surface of arms and hands than arteries