Skeletal System Flashcards
Number of Adult Bone
206
Framework of the Body and Good production of Blood
Bone
Ends of Bone
Epiphysis
The shaft of the Bone
Diaphysis
It is the cover on your bone. That supplies them with Blood, cells, and nerves that helps them grow and heal.
Periosteum
Membrane that lines the center of your bone. It also contains bone marrow.
Endosteum
It covers the epiphysis.
Articular Cartilage
It covers the epiphysis.
Articular Cartilage
Makes up the wall of the diaphysis.
Compact Bone
Bone Cells
Osteocytes
Canal that links the lacunae with one another. Passage of nutrients and gasses in the matrix from osteocytes.
Canaliculi
Connects the osteonic canals
Perforating canals
Tissue that is responsible for the strength of the bone. Found in compact bone.
Osteon
Housing to the cell
Lacunae
Formation of bone within sheetlike layers of connective tissue.
Intramembranous ossification/bone
Formation of bone through replacement of masses of cartilage with a bony tissue.
Endochondral ossification/bone
Responsible for the production of RBC, WBC, and Platelets.
Red bone marrow
Stores Fat
Yellow bone marrow
It consists of organic and inorganic component.
Bone matrix
Component of bone matrix that are secreted by osteoblasts.
Organic matrix of bone
Component of bone matrix that consists of calcium hydroxyapatile.
Inorganic matrix of bone
Calcium is stored in bone under the influence of ________.
Calcitonin
Skull bone, Hyoid bone, Vertebral column, Thorax
Axial Skeleton
Pectoral Girdle, Upper limbs, Pelvic Girdle, Lower limbs
Appendicular skeleton
Skull is made up of ____ bones.
22
Skull is made up of _____ cranial bones.
8
Skull is made up of _____ facial bones and a mandible.
13
It encloses and protects the brain.
Cranium
8 Cranial Bones
2 Frontal Bone
2 Parietal Bone
2 Temporal Bone
2 Occipital Bone
13 immovable facial bone.
Maxillae Bone
Palatine Bones
Zygomatic Bones
Lacrimal Bones
Nasal Bones
Vomer Bone
Inferior Nasal Conchae Bones
Houses the teeth and contains the large maxillary sinuses.
Maxillae
L-shaped bones located behind maxillae.
Palatine Bones
Makes up the cheekbones.
Zygomatic Bones
Form part of the medial walls of the orbits.
Lacrimal Bones
Form the bridge of the nose.
Nasal Bones
Makes up a portion of the nasal septum.
Vomer Bones
Scroll shaped bones that supports mucous membranes within the nasal cavity.
Inferior nasal Conchae
Lower jawbone that supports the lower teeth.
Mandible
Comprises the neck and supports the Head.
Cervical Vertebrae
Features that separates the cervical vertebrae from the rest are called ______ and ______.
Bifid spinous processes and transverse foramina
First cervical vertebra. Bony ring that supports the head.
Atlas
Second cervical vertebra. Tooth-like dens that pivots within the atlas.
Axis
Backbone to which the ribs are attached. Larger and stronger than cervical vertebrae.
Thoracic Vertebrae
How many bones are there in thoracic vertebrae?
12
Vertebrae that supports the weight of the body.
Lumbar Vertebrae
How many massive bone are there in lumbar vertebrae?
5 massive bones
Triangular structure at the base of the vertebral column.
Sacrum
Lowermost portion of the vertebral column.
Coccynx
Coccynx is composed of ____ fused vertebrae.
4
It supports the pectoral girdle and upper limbs and protects thoracic and upper abdominal organs. It includes the ribs, thoracic vertebrae, sternum, and costal cartilages.
Thoracic Cage
How many pairs of ribs are there in the human body?
12 pairs of ribs
The first 7 pairs on the ribs are true. It is also called as _____.
Vertebrosternal ribs
The last 5 pairs of the ribs are false. It is also called as ______.
Vertebrochondral ribs
Also known as “breastbone”. Located along the anterior mid-line of the thoracic cage.
Sternum
It is made up of 2 scapulae and 2 clavicles.
Pectoral Girdle
Form the framework of the arm, forearm, and hand.
Upper Limb
Form the framework of the arm, forearm, and hand.
Upper Limb
Makes up the upper arm.
Humerus
Located on the thumb side of the forearm.
Radius
Longer than radius. Making up the forearm and has a trochlear notch.
Ulna
Wrist is made up of how many carpals?
8 carpal bones
Framework of hand is made up of how many metacarpal bones?
5 metacarpal bones
Fingers are composed of how many phalanges?
3 phalanges except for thumb that lacks middle phalanx
Supports the trunk of the body and protects the pelvic organs.
Pelvic Girdle
Pelvic Girdle is composed of ____ and ____.
2 Coxal bones and sacrum.
Each coxal bones is made up of 3 bones. What are the 3 bones?
Ilium, Ischium, and Pubis
(part of the Coxal bone) The largest and superior portion.
Ilium
(part of the Coxal bone) L-shaped portion. Supports weight during sitting.
Ischium
(part of the Coxal bone) Comprises the anterior portion of the coxal bones.
Pubis
Framework for the Thigh, Lower leg, and Foot.
Lower Limb
Longest bone in the Body.
Femur
“Kneecap”. Located in the tendon that passes over the knee.
Patella
“shinbone”. Supports the weight of the body and articulates with the femur and tarsals.
Tibia
Slender bone lying lateral to the tibia.
Fibula
How many tarsal bones are there in the ankle?
7 tarsal bones
Articulates with the tibia and fibula.
Talus
Articulates with the tibia and fibula.
Talus
Largest of the tarsal bone in foot.
Calcaneus
How many metatarrsal bones are there in the foot?
5 metatarsal bones
Functional junctions between bones. Enables a wide variety of body movements.
Joints
Immovable or Slightly movable joints.
Fibrous Joints
Type of joint where the bones are entirely joined by cartilage, either hyaline cartilage or fibrocartilage.
Cartilaginous Joints
Most complex joint. The articular ends of bones are covered with hyaline cartilage.
synovial joint
“Joint Fluid”. A thick liquid located between your joints. Reduces friction when you move your joints.
Synovial Fluid
“shock absorbing pads”. Protect and cushion the joint surface and bone ends.
Menisci or Meniscus
Small fluid-filled sacs that reduce friction between moving parts in your body’s joints.
Bursae
Consists of an outer layer of dense connective tissue that joins the periosteum.
Joint Capsule
True or False: Diaphysis is filled with spongy bone to reduce the weight of the skeleton.
False: EPIPHYSIS is filled with spongy bone to reduce the weight of the skeleton.
True or False: Epiphysis contains a hollow medullary cavity that is linedd with endosteum and filledd with marrow.
False: Diaphysis contains a hollow medullary cavity that is linedd with endosteum and filledd with marrow.
True or False: Epiphysis contains a hollow medullary cavity that is lined with endosteum and filled with marrow.
False: Diaphysis contains a hollow medullary cavity that is linedd with endosteum and filledd with marrow.
True or False: The inorganic matrix of bone stores inorganic mineral salts in the form of calcium phosphate that is important in many metabolic processes.
True
True or False: Calcium in bone is a reservoir for body calcium.
True
True or False: When blood vessels are low, osteoclasts release calcium from bone.
True
Specialized cell that absorbs and removes bone, allowing for the development of new bone and maintenance of bone strength.
Osteoclasts