Coronal section of the brain and the arterial supply of the brain stem, including the vertebral and basilar arteries.

Illustration of the adult circumcised penis and the scrotum, frontal view.

Illustration of the penis, cross section, showing the corpus cavernosum, corpus spongiosum, urethra, and dorsal artery and nerve of the penis.

Illustration of the penis, cross section, showing the corpus cavernosum, tunica albuginea of corpus cavernosum, corpus spongiosum, urethra, and skin.

Illustration of the primary surface anatomy of the male body, left side view.

Illustration of the lymphatic system in a male figure, anterior view. Labeled lymphatic structures include the thoracic duct, entrance of the thoracic duct, lateral jugular lymph nodes, parotid lymph nodes, right lymphatic trunk, axillary lymph nodes, chyle cistern, lateral external iliac lymph nodes, and superficial and deep inguinal lymph nodes.

Illustration of the lymphatic system in a male figure, anterior view. Lymphatic structures shown include the thoracic duct, entrance of the thoracic duct, lateral jugular lymph nodes, parotid lymph nodes, right lymphatic trunk, axillary lymph nodes, chyle cistern, lateral external iliac lymph nodes, and superficial and deep inguinal lymph nodes.

Illustration of the lymph nodes in the occipital region (back of the head and neck) of a male figure, posterior view. Labeled lymph nodes include the occipital lymph nodes and the lateral nuchal lymph nodes.

Illustration of the lymph nodes in the occipital region (back of the head and neck) of a male figure, posterior view. Lymph nodes shown include the occipital lymph nodes and the lateral nuchal lymph nodes.

Illustration of the thoracic lymph nodes: deep jugular, deep cervical, anterior mediastinal, pretracheal, bronchopulmonary, pulmonary, and deep pulmonary lymph nodes. Other labeled structures include the right subclavian artery and vein, right primary bronchus, esophagus, trachea, thoracic duct, aortic arch, and aorta.

Illustration of the thoracic lymph nodes: deep jugular, deep cervical, anterior mediastinal, pretracheal, bronchopulmonary, pulmonary, and deep pulmonary lymph nodes. Other structures include the right subclavian artery and vein, right primary bronchus, esophagus, trachea, thoracic duct, aortic arch, and aorta.

Illustration of a lymph node: normal (left) versus afflicted with Hodgkin's lymphoma (right), cross section. Labels include the efferent lymph vessel, medullar sinus, marginal sinus, lymphatic node, afferent lymph vessel, and pathology due to Hodgkin's disease.

Illustration of a lymph node: normal (left) versus afflicted with Hodgkin's lymphoma (right), cross section. Structures shown include the efferent lymph vessel, medullar sinus, marginal sinus, lymphatic node, afferent lymph vessel, and pathology due to Hodgkin's disease.

Illustration of the lymph nodes in the head and neck of a male figure, side view.

Illustration of the lymph nodes and lymph vessels in the head and neck of a male figure, side view.

Illustration of the posterior thoracic and abdominal lymph nodes. Labeled lymph nodes include the cervical, axillary, deep axillary, posterior mediastinal, medial common iliac, common iliac, iliac, and lateral aortic lymph nodes. Other labeled structures include the thoracic duct and the aorta.

Illustration of the posterior thoracic and abdominal lymph nodes. Lymph nodes shown include the cervical, axillary, deep axillary, posterior mediastinal, medial common iliac, common iliac, iliac, and lateral aortic lymph nodes. Other visible structures include the thoracic duct and the aorta.

Illustration of the lymph nodes along the abdominal and pelvic organs. Labeled lymph nodes: right gastric, aortic, internal iliac, parauterine, left gastric, splenic, celiac, mesenteric, left colic, and the subserosal lymphatic network. Other structures include the liver, gallbladder, abdominal aorta, inferior vena cava, stomach, colon, uterus, and bladder.

Illustration of the lymph nodes along the abdominal and pelvic organs. Lymph nodes shown: right gastric, aortic, internal iliac, parauterine, left gastric, splenic, celiac, mesenteric, left colic, and the subserosal lymphatic network. Other structures include the liver, gallbladder, abdominal aorta, inferior vena cava, stomach, colon, uterus, and bladder.

Illustration of the lymphatic system in a male figure, frontal view.