Axial Skeleton Flashcards
How many bones make up the face
8
How many bones make up the cranium
7
What bones make up the cranium
Frontal
Parietal
Interpariental
Ethmoid
Temporal
Occipital
Sphenoid
What bones form the face
Nasal
Lacrimal
Zygomatic
Maxilla
Incisive
Palatine
Pterygold
What type of bones form the roof of the cranium
Membranous bones
What type of bones form the base of the skull
Primordial bones (bones that replace cartilage)
How is the skull bone made lighter
Outer and inner layer of cortical bone
Middle layer has a reduced sponginess to make it lighter called the Diploe
What type of joints is there between the flat bones of the skull
Fibrous
Where are the two synovial joints in the skull
Temporal Mandular joint
Hyoid bone apparatus
What joints do you get between the vertebrae
Fibrous
Synovial
What is the structure of the intervertebral disk like
Hard capsule
Squishy centre
How many cervical vertebrae do all animals have
7
What is the YES joint
Atlanti- occipital joint
Between consoles of occipital bone and cranial articulate fossa of atlas (between skull and C1)
Upward and downward movement
What is the NO joint
Atlanto- axial joint
Between C1 and C2
Allows rotation of the skull
What are the 4 long vertebral ligaments and where are they
Nuchal ligament —> T3/4
Supraspinous ligament —> T3 to sacrum
Ventral longitudinal ligament —> T8 to sacrum
Dorsal longitudinal ligament —> sacrum
