Skeletal System Flashcards
What is the name of the fibrous sheath that covers bones and contains its nerves and blood vessels?
Periosteum
What cell makes bone by laying down collagen matrix followed by osteon?
Osteoblasts
What cells solubilize bone with acid secretions and cause minerals to be resorbed from bone; causing it to degrade, and breakdown in response to hormonal signals?
Osteoclasts
What is the calcium and phosphate–rich hydroxyapatite matrix that Osteoblasts produce?
Osteon
What are the small canals in bone through which Osteocytes communicate with each other?
Canaliculi
What is the name of the bone held in place by only muscle that supports the tongue, and is the only bone in the body to not connect to other bones?
hyoid bone
Please Identify the long bones on the skeleton?
Arm
upper-[humerus],
lower with palms anterior-
superior [radius] and inferior [ulna]
Leg
upper- [femur]
lower feet facing forward–
anterior larger [tibia], posterior smaller [fibula]
Identify the short bones on the skeleton?
hand- carpal
foot- tarsus
Identify the flat bones on the skeleton?
back of the shoulders-
scapula
sternum - [breast bone]
ribs
Identify the irregular bones on the skeleton?
skull,
knee- patella
elbow
What are the articulating surfaces of bones covered in?
hyaline cartilage
Bones are held together (articulated) at joints by connective tissue called_______.
Ligaments
Bones are joined to muscles by connective tissue called_______.
Tendons
What are the two ends of a long bone called?
Epiphyses
What is the middle long shaft of long bones called?
Diaphysis
