Heads

In anatomy, the head of an animal is the rostral part (from anatomical position) that usually comprises the brain, eyes, ears, nose, and mouth (all of which aid in various sensory functions, such as sight, hearing, smell, and taste). more...

Home
Accessories
Bags
Ball Markers
Balls
Books, Videos
Clubmaking Products
Grips
Heads
Drivers, Metalwoods
Irons, Putters,Wedges
Other
Other
Shafts
Aldila
Grafalloy
Other
True Temper
Clubs
Gloves
Golf Carts, Cars
Other
Schools, Lessons,...
Tee Times, Green Fees
Training Aids
Vintage
Disc Golf
Men Golf Clothing
Men Golf Shoes
Men's Accessories
Women Golf Clothing
Women Golf Shoes

Some very simple animals may not have a head, but many bilaterally symmetric forms do.

Anatomy generally

Bilateral symmetry

The very simplest animals do not have a head, but many bilaterally symmetric forms do. Vertebrates in particular have distinctive heads, which is associated with the development of the neural crest in the developing vertebrate embryo. The contents of the vertebrate head are protected by an enclosure of bone called the skull, which is attached to the spine. The head is the most complex anatomical construct in the anatomy of vertebrates.

Anatomy in humans

Bones of the head

The skull is divided into the cranium (all the skull bones except the mandible) and the mandible (or jawbone). One feature that distinguishes mammals and non-mammals is that there are also three ear bones (called ossicles):

malleus (hammer); incus (anvil); stapes (stirrup);

These ossicles are important components in the sense of hearing in mammals. Other animals have a single bone, homologous to the stapes, that is usually called the columella.

The cranium can be divided into a skull cap (or calvarium) and base. The cranium consists of several bones which fuse together at junctions called sutures. Several sutures join to form a pterion. This process of bone fusion occurs in utero to protect the most important organ in the body, the brain. Although most fusing is complete before birth, there are large areas of fibrous tissue (called fontanelles) where fusion is incomplete until puberty. The fontanelle above the forehead in newborns and young children is particularly easy to identify by touch. The adult cranium is separated into several bones, several of which are mirrored on the right and left sides of the skull. Descriptions of these bones often use terms of anatomical position to more accurately depict how the bones relate to each other:

two maxillae (one on each side of the head) that cover the inferior and medial to the eye socket (or orbit); two zygomatic bones, inferior and lateral to the orbit; two temporal bones, covering an area where the ears are located; a single frontal bone, superior to the orbit; two parietal bones, posterior to the frontal bone and superior to the temporal bone; an occipital bone at the back of the head; several more internal bones which are not easily seen which are;

Read more at Wikipedia.org