The lungs work with the heart to oxygenate blood. They do this by filtering the air a person breathes, then removing excess carbon dioxide in exchange for oxygen. Bogin, B; Varela-Silva, M. I. (2010). "Leg length, body proportion, and health: A review with a note on beauty". International Journal of Environmental Research and Public Health. 7 (3): 1047–75. doi: 10.3390/ijerph7031047. PMC 2872302. PMID 20617018. The pelvis is one of two bones used to determine the sex of a skeleton, which is determined by examining the size of the greater sciatic notch (also known as the pelvic opening). Nipple. The nipple is the rounded area where milk drains to feed a baby. They have many nerve endings that can make them an area of sexual stimulation. Nipples do not always protrude. Some females have flat or inverted nipples.

Non-vital organs are those that a person can survive without. However, this does not mean that conditions affecting these organs are never life threatening or dangerous. Many infections and cancers in non-vital organs are life threatening, especially without prompt treatment. A connective tissue membrane is built entirely of connective tissue. This type of membrane may be found encapsulating an organ, such as the kidney, or lining the cavity of a freely movable joint (e.g., shoulder). When lining a joint, this membrane is referred to as a synovial membrane. Cells in the inner layer of the synovial membrane release synovial fluid, a natural lubricant that enables the bones of a joint to move freely against one another with reduced friction. For instance, the stomach releases the hormone ghrelin, which signals to the brain that it is time to eat. This causes feelings of hunger and encourages a person to eat, which leads to the beginning of the process of digestion. An ideal figure, used when aiming for an impression of nobility or grace, is drawn at 8 heads tall. The frontal lobe: The frontal lobe, which is located in the front of the head, is the largest section of the brain. It plays a role in many conscious functions, including personality and movement. It also helps the brain interpret smells.

Compression fracture: In this type of fracture, external force pushes the spine forward and downward. Tissues are organized into four broad categories based on structural and functional similarities. These categories are epithelial, connective, muscle, and nervous. The primary tissue types work together to contribute to the overall health and maintenance of the human body. Thus, any disruption in the structure of a tissue can lead to injury or disease. Labia minora. These are the inner lips. They sit inside the outer lips but can be varying sizes. In some females, for example, the inner lips extend beyond the outer lips.

Transverse part - extends from the spinous processes of vertebrae T1-T4 (or C7-T3) to the acromion and superior crest of the spine of the scapula. This part supports and draws the scapula medially. Internally, the breasts are primarily composed of fat. The amount of fat can determine breast size. However, breast size has no bearing on the amount of milk someone is able to produce. Arterial: the three largest thoracic arteries (brachiocephalic trunk, left common carotid artery, left subclavian artery) originate from the thoracic aorta Many people consider breasts “accessory organs” to the female reproductive system, as they are responsible for supplying milk to an infant after childbirth. The main pancreatic duct connects to the common bile duct, which flows from the liver and gallbladder. Therefore, problems within the biliary tree, liver, or gallbladder may also affect the pancreas.Serratus anterior is important in attaching the scapula to the thoracic wall. The muscle pulls the scapula in an anterolateral direction along the thoracic wall. Serratus anterior also rotates the scapula by pulling its inferior angle laterally. The muscle is innervated by the long thoracic nerve (C5-C7), which is a branch of the brachial plexus. Trapezius receives motor innervation from the accessory nerve (CN XI). It also receives sensory innervation through the anterior rami of spinal nerves C3-C4 (via cervical plexus).

Dislocation: Tears or damage to the ligaments can cause the vertebrae to become dislocated or misaligned. The brain is the body’s control center. It forms the core of the central nervous system by creating, sending, and processing nerve impulses, thoughts, emotions, physical sensations, and more. The leftover materials (stool) then move on to the large intestine where it transforms from liquid to solid, as water is removed. Finally, it gets pushed into the rectum, ready to be eliminated from the body. Leitch, I. (1951). "Growth and health". British Journal of Nutrition. 5 (1): 142–51. doi: 10.1079/BJN19510017. PMID 14886531.

Posterior trunk muscles

Bernstein, Stephen A.; Lo, Michael; Davis, W. Sumner (1 March 2017). "Proposing Using Waist-to-Height Ratio as the Initial Metric for Body Fat Assessment Standards in the U.S. Army". Military Medicine. 182 . Retrieved 10 September 2020.

They originate from the transverse processes of cervical and lumbar vertebrae and insert onto the transverse process of an adjacent vertebra. These muscles assist in lateral flexion of the spine and also work to stabilize the spine. They are innervated by the posterior and anterior rami of spinal nerves. The left and right bronchi: The trachea splits into these tubes, which extend into the lungs and have branches. These smaller bronchi split into even smaller tubes called bronchioles. The intrinsic, or deep, muscles allow for movements such as rotation and bending. These muscles include: The blood vessels: There are numerous blood vessels in the lungs for carrying blood to and from the heart.

Joints are the points at which two or more bones meet. They enable a range of movements like rotation, abduction, adduction, protraction, retraction and more. Based on flexibility and mobility, joints can be further classified into movable joints and immovable joints. Movable joints are flexible while immovable joints (also called fixed joints) are non-flexible since the bones are fused. Muscles The vulva refers to the external parts of a female’s genitals. It consists of several parts, including the labia majora, the labia minora, and the glans clitoris. Major functions of the cardiovascular system include transportation of oxygen, nutrients and hormones throughout the body within the blood, and as well as eliminating carbon dioxide and other metabolic waste. Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. We avoid using tertiary references. We link primary sources — including studies, scientific references, and statistics — within each article and also list them in the resources section at the bottom of our articles. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. The pylorus: This portion of the stomach connects to the small intestine. It includes a muscle called the pyloric sphincter, which controls when and how much stomach content flows into the small intestine.