Integumentary System
Muscular System
Cardiovascular System
Skeletal System
Blood Vascular System
100

This is the body's largest organ, extensively covering and protecting the body with an area of about 20 square feet in adults. 

What is the skin?

100

These attach muscle to bone; provide durability and elasticity. 

What are tendons?

100

This system is used to determine blood types.

What is the ABO system?

100

This forms the central axis of the body and includes the skull, neck, vertebral column, and thoracic cage. It includes a total of 80 bones.

What is the axial skeleton?

100

These carry blood away from the heart. 

What are arteries?

200

This is the deep layer of the skin
composed of the papillary and
reticular layers.

What is the dermis?

200

These extend the forearm at the elbow and stabilizes the shoulder joint.

What are triceps brachii?

200

A condition in which the ability of the blood to carry oxygen is reduced, often due to a decrease in red blood cells or hemoglobin.

What is anemia?

200

The facial skeleton consists of this many bones that form the structure of the face and protect the sensory organs. These bones also provide attachment points for muscles of facial expression and mastication.

What is 14 bones?

200

Tiny blood vessels that connect arterioles and venules, the site of gas, nutrient, and waste exchange between blood and tissues. They have only a single layer of endothelial cells to facilitate exchange.

What are capillaries?

300

These are the membranes that line the
fibrous capsules surrounding
joints, bursae, and tendon
sheaths; secrete lubricating
fluid.

What are synovial
membranes?

300

This flexes the lumbar spine, aids in respiration, and maintains posture.

What is the rectus abdominus?

300

This is located between the left atrium and left ventricle. It prevents backflow of blood into the left atrium when the left ventricle contracts. 

What is the Bicuspid (Mitral) Valve?

300

The central cavity within a long bone, containing bone
marrow, either red (hematopoietic) or yellow (adipose), depending on the bone's function.

What is the medullary cavity?

300

These are thinner than arterial walls due to lower pressure, containing valves to prevent backflow of blood.

What are venous walls?

400

 This detection methods helps discover melanoma.

What are the ABCDEs of melanoma detection?

400

Formed by the mandible, sternocleidomastoid muscle, and the midline of the neck. This contains vital structures such as the carotid arteries, internal jugular vein, and vagus nerve.

What is the anterior triangle of the neck?

400

This is the outer layer of the heart, which is also part of the pericardium (the protective sac surrounding the heart). 

What is the epicardium?

400

A type of bone cell involved in the resorption and breakdown of bone tissue, crucial for bone remodeling and repair.

What is the osteoclast?

400

The middle layer, composed of smooth muscle and
elastic fibers, but much thinner than in arteries, reflecting the lower pressure in veins.

What is tunica media?

500

These detect harmful stimuli, leading to the sensation of pain.

What are nociceptors?

500

This is located deep in the gluteal region; important for hip stabilization and movement. 

What is the piriformis

500

Known as the pacemaker of the heart, this is responsible for initiating the electrical impulses that set the heart rate. 

What is the sinoatrial (SA) node?

500

These are characterized by dense fibrous connective tissue and allow for little to no movement. Examples include sutures in the skull, syndesmosis between the radius and ulna, and gomphosis between teeth and their sockets. 

What are fibrous joints? 

500

This is a dural venous sinus within the brain that drains blood from the brain, receiving blood from the transverse sinus, and empties into the internal jugular vein.

What is the sigmoid sinus?