Anatomy Quiz on Body Cavities and Planes

The standard reference point for describing the human body, where the body is standing upright with arms at the sides, palms facing forward, feet together, and head facing forward.

A vertical plane that divides the body into equal right and left halves.

A vertical plane parallel to the median plane, dividing the body into unequal right and left halves.

A vertical plane perpendicular to the median plane, dividing the body into anterior and posterior parts.

A horizontal plane that divides the body into upper and lower parts.

Terms used to describe the location of body parts relative to each other.

Words that refer to the position of a structure on the body. Examples include anterior (front), posterior (back), superior (above), inferior (below), medial (towards midline), lateral (away from midline).

A way of describing a body part by referring to its location and relationship to other parts of the body.

A large area in the lower trunk of the body that can be divided into smaller sections to pinpoint pain or other issues.

A method of dividing the abdomen into four sections using a vertical and horizontal line that intersect at the belly button.

A method of dividing the abdomen into nine sections using two horizontal and two vertical lines.

A cavity located in the back of the body containing the central nervous system.

A subdivision of the dorsal cavity, within the skull, that houses the brain

A subdivision of the dorsal cavity, within the vertebral column, that houses the spinal cord.

A membrane that protects the brain and the spinal cord.

A cavity located in the front of the body that houses various organs.

The ventral cavity is divided into three compartments: thoracic, abdominal, and pelvic. The thoracic cavity is separated from the abdominal cavity by the diaphragm.

The thoracic cavity contains organs like the heart and lungs.

The abdominal cavity houses organs such as the liver, stomach, and intestines.

The pelvic cavity includes the urinary bladder, rectum, and reproductive organs.

The oral cavity contains the tongue and teeth and is lined by mucous membrane.

The nasal cavity is located in the nose and lined by mucous membrane.

The orbital cavities, or orbits, contain the eyeballs.

The middle ear cavities contain small bones and muscles involved in hearing.

The skin is the largest organ in the body, covering the external surface. It weighs about 4.5-5 kg, about 7% of total body weight.

The skin's thickness varies from 0.5 mm on the eyelids to 4.0 mm on the heels, with an average of 1-2 mm across most of the body.

The integumentary system includes the skin and its appendages (hair, nails, and sweat glands) and the hypodermis.

The epidermis is the superficial layer of the skin, composed of thick epithelial tissue.

The dermis lies beneath the epidermis and is made of fibrous connective tissue.

The hypodermis, a fatty layer composed of loose areolar connective tissue and adipose tissue, anchors the dermis to the body's fascia.

The integumentary system plays a vital role in protecting the body, regulating temperature, and providing sensory information.

From the simplest atom to the most complex organism, the human body is systematically organized into six levels, with each level building upon the previous one.

The outermost layer of skin, made of epithelial tissue. It's avascular, meaning it doesn't bleed when scratched. It has five layers in thick skin (palms/soles) and four layers in thin skin (rest of body).

The deeper, thicker layer of skin made of connective tissue, containing blood vessels. It's vascular, so cuts that reach this layer will bleed.

Skin appendages include structures attached to the skin, such as hair, nails, sweat glands, and sebaceous glands (oil glands).

The superficial fascia is a layer of connective tissue found directly beneath the dermis. It's often full of fat, and its thickness varies across the body.

The superficial fascia allows the skin to move freely over deeper structures, provides a path for blood vessels and nerves, and acts as a heat insulator and energy storage due to its fat content.

The deep fascia is a dense, fibrous connective tissue layer that separates and supports muscles, as well as organs, while allowing movement between them.

A cut that penetrates to the dermis will cause bleeding because the dermis contains blood vessels.

The epidermal cells use UV radiation to synthesize vitamin D, which is vital for calcium absorption from the digestive tract.