### body part | artery:

Pulmonary artery
* Most pulmonary arteries bring blood
  - deliver blood
  - lead to lungs
* Pulmonary arteries are arteries
* Pulmonary arteries carry blood from the heart to the lungs
  - contain a greater concentration of oxygen than do pulmonary veins
  - run closely with bronchi
* Some pulmonary arteries carry blood carbon dioxide
* carries blood low in oxygen from the right ventricle to the lungs.

### body part | artery | pulmonary artery:

Pulmonary trunk
* carries blood low in oxygen from the right atrium to the lungs.
* is anterior to the aorta.
* pulmonary artery

Renal artery
* Most renal arteries bring blood
  - deliver blood
* Renal arteries deliver blood to the kidneys
* Some renal arteries divide into capillaries
  - enter kidneys
* brings blood in
  - in blood for filtration
* is an artery

### body part | artery:

Smaller artery
* Smaller arteries branch off from the aorta and carry blood to organs and tissue
  - out into even smaller vessels
  - branching from the aorta carry blood to all parts of the body
  - extend from sides and posterior end of the heart
+ Circulatory system, Systemic circulation: Cardiovascular system
  * The biggest systemic artery in the body is the aorta. This is the large blood vessel that comes out of the heart. Smaller arteries branch off from the aorta. These arteries have smaller arteries that branch off from them. The smallest arteries turn into arterioles.

Atrium
* Some atriums deliver blood
  - fill with blood
  - pump blood
* are chambers
  - courts
  - sacs
* includes corpi.
* take different forms depending on the type of building they show up in.

Back
* Some backs are part of bodies.
* are body parts
  - football players
  - car seats
  - chairs
  - torsos
  - positions
  - solid objects
  - support
* cause backs.
* includes bone cells
  - ground substances
  - lobes
  - marrow
  - mast cells
  - sections
* perform functions.

### body part | back:

Magnetic back
* allows mounting on metal surfaces.
* can attach to magnet board or other metal surface.

Backbone
* Most backbones are part of endoskeletons
  - have vertebrae
* Some backbones protect dorsal nerve cord
  - spinal cord
* are connections
  - major cables or other communications links between various points
* are part of books
* deletes all sidechain atoms.
* have characteristics
  - follow characteristics
  - unique characteristics
  - marrow
  - mast cells
  - tail bones
* is courage
* run from heads.

### body part | backbone:

Notochord
* are present in the embryo of all vertebrates.
* exist in both vertebrate and invertebrates.

### body part:

Beak
* Most beaks adapt for fruit.
* Most beaks have growth
  - structures
* Some beaks are big, with the ability to get bigger
  - contain substances
  - evolve over time
* Some beaks have edges
  - sharp edges
* Some beaks help food
  - peacocks
  - make noise
  - penetrate shells
* Some beaks replace mouths
  - teeth
* also play an important role in defining a bird.
* are body parts
  - in a variety of sizes and shapes, depending on the bird's diet
  - most often black as are their claws
  - noses
  - part of birds
  - tips
* become colored due to deposits of carotenoid pigments, collectively known as xanthophylls.
* have grooves
* includes clappers
  - lips
  - tongues
* often reveal food habits.
* provide birds with a lightweight alternative to a mouthful of teeth.