Human Anatomy Quiz

An Overview of Human Anatomy

• The human body consists of approximately 200 bones, 650 muscles, 79 organs, and enough blood vessels to circle the Earth twice.
• Human anatomy is the study of the structure of the human body, and it can only be mastered by taking small and logical steps.
• There are three main anatomical planes that divide the body into frontal, lateral, and transverse views, and anatomical structures are described by precise terms.
• Human anatomy consists of two main divisions: macroscopic or gross anatomy and microscopic anatomy.
• Macroscopic or gross anatomy deals with large structures that are mostly seen with the naked eye, and there are two fundamental approaches to studying it: regional and systemic anatomy.
• Regional anatomy organizes the body into several body parts or regions: upper limbs, lower limbs, trunk (thorax, abdomen, pelvis, back), head, and neck.
• The thorax is the region located between the neck and the abdomen, and it is the epicenter of the circulatory system and the primary player in breathing, which is mainly controlled by the diaphragm.
• The abdomen and pelvis are often taught separately for didactic purposes, but their contents blend together into one large abdominopelvic cavity, which is home to some of the body's largest blood vessels and important nerves.
• Neuroanatomy is the study of how the brain communicates with other regions of the body through nerves, and the nervous system controls every function of the human body.
• The nervous system has two structural divisions: central and peripheral, and the central nervous system consists of the brain and the spinal cord.
• The brain is the master regulator of the body and has four main parts: cerebrum, subcortical structures, brainstem, and cerebellum.
• The peripheral nervous system refers to all neural tissue located outside the central nervous system and consists of 12 pairs of cranial nerves, the 31 pairs of spinal nerves, and all their branches.