CH # 7: Skeletal System Flashcards
Slightly moveable joints
Amphiarthroses
Bones that r attached 2 the body
Upper and lower extremities
Appendicular skeleton
Growth resulting from material being deposited on the surface
Example: the growth in diameter of long bones
Appositional growth
Thin layer of hyaline cartilage that covers the end of long bones in joints
Articular cartilage
A joint
The area of contact between 2 bones
Articulation
Bones of the head, neck and trunk
Axial skeleton
The long straight shaft of a long bone
Diaphysis
2 names 4 a freely moveable joints characterized by a joint cavity
Diarthroses
Synovial joint
Membranous lining of a cavity w/in a bone
Endosteum
The remnant of the epiphyseal plate after the cartilage calcifies and growth ceases
Epiphyseal line
The cartilaginous plate between the epiphysis and diaphysis of a bone
Reponsible 4 the lengthwise growth of a long bone
Epiphyseal plate
The end of a long bone
Epiphysis
Production of blood or its cells
Hematopoiesis
Bone-forming cells
Immature cells
Osteoblasts
Cells that destroy, break down, or resorb bone tissue
Osteoclasts
Mature bone cells
Osteocytes
2 names 4 the formation of bone
Osteogenesis
Ossification
Structural unit of bone
Haversian system
Osteon
Attachment 4 the upper extremities in the chest region
Clavicle and scapula
Pectoral girdle
Attachment 4 the lower extremities
Bones collectively shaped like a basin
Ilium, ischium, pubis
Pelvic girdle
Tough white outer membrane that covers a bone
Periosteum
Immovable fibrous joints between the flat bones of the skull
Sutures
Immovable joinst
Synarthroses
The skeletal system consists of bones, cartilage, tendons and ?
Ligaments
Bones r relatively light weight compared 2 their ?
Strength
What protects the heart and lungs?
Rib cage
Bones and muscles work 2gether 2 produce ?
Body movement
What mineral is needed 4 vital metabolic processes in the skeletal system?
Calcium
Fat is stored in the?
Yellow bone marrow
If a bone is not being used, the body doesn’t store as much calcium in it and the skeleton?
Weakens
In an adult, red marrow is only found in bones of the skull, ribs, sternum, clavicles, vertebrae and?
Pelvis
Blood cell 4mation is called?
Hematopoiesis
Blood cell 4mation takes place mostly in the?
Red bone marrow
The microscopic unit of compact bone is an?
Osteon
What is the balance of processes in the human body called?
Hemostasis
Concentric rings of calcified matrix that surrounds osteonic canals r called?
Lamellae
W/in both compact and spongy bone, osteons r round w/blood vessels in the center surrounded by a?
Hard matrix
There r small channels through the matrix called?
Canaliculi
Spongy (cancellous) bone consists of plates of bone called?
Trabeculae
The thigh (femur), leg (fibula, tibia), and forarm (radius, ulna) r all part of what classification of bone?
Long bones
The bones of the wrist and ankle r part of what classification of bone?
Short bones
The sternum and most of the bones of the crainum r part of what classification of bone?
Flat bones
The vertebrae r part of what classification of bone?
Irregular
The shaft of a long bone is called?
Diaphysis
What type of tissue is found in the medulla cavity?
Adipose
The expanded portion at the end of a long bone is called?
Epiphysis
Bones grow in length at the “growth plate” which is also called?
Epiphyseal plate
Thin connective tissue membrane that lines the medullary cavity is the?
Endosteum
The process of bone 4mation is called?
Osteogenesis
What type of cell division does the epiphyseal plate grows by?
Mitosis
The skull is made up of how many bones
28
The large opening on the lower surface of the occipital bone where the spinal cord passes through is called?
Foramen magnum
What is the name of the depression that articulates w/the mandible?
Mandibular fossa
Which bone projection helps form the prominence of the check?
Zygomatic process
What is the protuberance behind the ear?
Mastoid process
What bones form the upper jaw?
Maxillary bones
Which bone forms the posterior portion of the hard plate and lateral walls of the nasal cavity?
Palatine bones
Lacrima means?
Tear
What bones help 2 form the nasal septum?
Vomer
What is the name of the U shaped bone in the neck located between the mandible and the larynx?
Hyoid bone
The vertebral column consists of how many vertebrae?
26
What is found between each pair of vertebrae, that allow the spine 2 bend?
Intervertebral discs
What r the 2 vertebral columns curvatures convex anteriorly?
Cervical and lumbar
What r the 2 vertebral columns curvatures concave anteriorly?
Thoracic and sacral
How many cervical vertebrae r there?
7
How many thoracic vertebrae r there?
12
How many lumbar vertebrae r there?
5
The part of the vertebra can b felt from the back is?
Spinous process
Which part of the vertebrae project laterally from the vertebral arch?
Transverse processes
What part of the vertebra does the spinal cord run?
Vertebral foramen
What forms the posterior wall of the pelvic cavity?
Sacrum
What is the tailbone called?
Coccyx
The sternum is connected 2 the ribs by the?
Costal cartilage
The top part of the sternum that articulates w/the clavicles and the 1st 2 pairs of the ribs is called?
Manubrium
What is the name of the inferior notch of the sternum?
Xiphoid process
Which ribs meet the sternum indirectly by joining w/cartilage of the ribs above?
Vertebrochondral
The shoulder is formed by the articulation of the clavicle, acromian process of the scapula and the top of the?
Humerous
The head of the humorous articulates w/a depression in the scapula called the?
Glenoid cavity
Which fossa is where the ulna fits w/the humerus 2 form the elbow joint?
Olecranon fossa
There r various words 4 protrusions of bones, including the tubercle, process, condyle, epicondyle, and?
Tuberosity
What is the name of the large depression where the 3 bone of the pelvic girdle meet?
Acetabulum
The greater and lesser trochanters r sites 4?
Muscle attachment
Which lower leg bone is on the lateral side of the leg?
Fibula
Which lower leg bone is on the medial side of the leg?
Tibia
Which projection is at the distal end of the tibia and forms the medial bulge of the ankle?
Medial malleolus
Which ankle bone articulates w/the tibia?
Talus
The bones of the toes r called?
Phalanges
The knee cap is also called the?
Patella
Immovable joints like the sutures of the skull r called?
Synarthroses
Slightly moveable joints like the symphysis pubis r called?
Amphiarthroses