Bones 5 Flashcards
Axial skeleton
Longitude axis of body the skull,vetebral column(spine),rib cage (thoracic cage),hyoid bones in the neck
Appendicular skeleton
Limbs and girdles(shoulders and pelvic)
The skull are formed by two sets of bones
The cranium encloses and protects the fragile brain tissue.The facial bones form a cradle for the eyes that is open to the anterior and allow the facial muscles to show feelings through smile
Cranium
The box likes cranium is composed of eight large flat bones
Frontal cranial bone
Forms the forhead,bony projections under eyebrow, and superior part of eye orbit
Parietal bones
Form the superior and lateral walls of cranium,the saggital suture is at the midline’s where the two partial bones meet and coronal structure is where the paired bones meet the frontal bone
External acoustic meatus
Is the canal the leads to the eardrum where sound enters the ear
Styloid process
Neck muscles attachment point
Zygomatic
Thin bridge of bone that joins with cheekbone
Occipital bone
Makes the back of the cranium
The base of the bone is foramen magnum a large opening that allows the spinal cord to connect with brain
The sphenoid bone
In the skull connects with many other bones the butterfly of the skull and it protects the piturity gland for hormones and helps the eyes move and has holes that let nerves pass through to help with things like vision and chewing
Ethmoid bone
Forms roof of the nasal cavity,helps shape the eye socket and it has hole that allows for smell nerves,conchae which helps filter the breathing
Facial bones
Fourteen bones make up the face.twelve are paired and only mandible and vomer are single
Maxillae
The maxillae are two bones that fuse to form the upper jaw and play a critical role in the structure of the face. They connect with all the facial bones except the mandible (lower jaw).
Palatine bones
Form the posterior part of the hard palate failure of these cause them to fuse causing a cleft palate
Zygomatic bones
Cheekbones
Lacrimal bones
Passageway for tears
Nasal bones lower part of skeleton
Is made up of cartilage
Vomer bone
Septum which separates the two nostrils
Mandible or lower jaw
Largest strongest bone of face
Joins temporal bones on each side of face
Freeing only movable joints in the jaw
Hyoid bone
Is special because it doesn’t connect to any other bones directly but is instead suspended in the neck
It is important with swallowing and speaking since it provides base for the tongues and allows the larynx to move with the help of attached neck muscles
