Soto - skeletal system Flashcards
fFunctions of the skeletal system
-provide a framework to support the body’s systems
-provide an attachment for muscles
-enclose and protect vital organs
-manufacture blood cells
-store calcium &phoshorus… vital for metabolism
bone
The hard framework
What does Vitamin D do
helps it use calcium so that it hardens properly
(bone is a living and stable organism)
Sinus
a cavity in the interior of bone it is lined with mucous and filled with air
**1. how many bones are in the skeletal system
2. what are the two groups called
3. how many bones are in each group
1.* 206*
2. Axial-basic framework-80 bones
3. Appendicular-the extremities-126 bones
Axial Skeleton
Skull-Verbal Column-Thorax
Skull
- Cranial bones surround and protect the brain
***2. Frontal - Parietal
- Temporal
- Occipital***
Frontal
The forehead
Parietal
The Roof
Temporal
- The sides
- Interacts with the lower jaw mandible
cartilage
tissue with less calcium than bone
ligament
tissue connecting* bone to bone* at the joints
Tendon
Tissue muscle to bone
Diaphysis
the shaft or main central portion
Epiphysis
the ends covered in cartliage (lubericant)
Marrow
lies within the diaphisis produces red&white blood cells and platelets
Periosteum
a membrane covering the bone with blood vessels and nerves…. growth and repair of bone begins here…. tendons attach to periosteum
Occipital
The back… contains the Foramen Magnum (a hole that allows the brain to attach to the spinal cord)
Maxilla
The Upper Jaw
Vertebral Column
- The main Axis of the Body
- Rigid yet Flexible
- It Incloses and Protects the Spinal Cord
- Its Curved Shape serves as a Shock Protector
- Between the Cartilage are Discs made of cartilage
- Ligaments hold the Vetebrae in place
Cervical
The 7 Neck Vertebrae
Thoracic
The 12 Chest Vertabrae Supporting the RIBS
Lumbar
The 5 Lower Back Vertabrae…Largest and Heaviest
Sacrum
The vertebrae that Attaches to the Pelvis (hip)
Components of the Thorax
**1. Sternum
2. Ribs
Sternum
The Breastbone
Ribs Pairs 1-10
Attach to the Thoratic Vertebrae and Sternum
Ribs Pairs 11-12
Attach to the Thoratic Vertebrae but not to the Sternum….“Floating Ribs”
Coccyx
The “TailBone” of NO Importance
Components of the Appendicular Skeleton
1. Girdles
2. Arms
3. Legs
Upper Extremities
Pectoral Girdle
Secures the arms to the trunk of the body
What are the UPPER Extremeties made up of?
the clavicle and Scapula
SCAPULA
the shoulder blade
CLAVICLE
the collar bone… connects the scapula to the sternum
HUMERUS
UPPER arm bone…. attaches to the scapula
ULNA
longer lowerarm bone on the little finger side
RADIUS
lower arm bone on the thumb side
CARPALS
The WRIST bones… 8 per wrist
METACARPALS
PALM bones….. 5 per hand
PHALANGES
FINGER Bones…. 12 per hand…. 2 per thumb…..three for the rest of the fingers
PELVIC GIRDLE
a basin-like ring of bones that secures the legs to the trunk
Whats the Difference between Male and Female Pelvic Bones
- MALE- Narrow, heavy, and deep…. designed for strength and speed… heart-shaped opening
- FEMALE- broad, light, and shallow, designed for child-bearing… oval shaped opening
Femur
The UPPER Leg Bone… Strongest and Longest Bone
Patella
KNEECAP
Tibia
Lower leg Bone Big Toe side
Fibula
Lower Leg Bone Little Toe Side
Tarsals
The Ankle Bones 7 per Ankle
Metatarsals
The Instep (arch) and BALL of the foot…. 5 per foot
Phalanges (foot)
The Toe bones… 14 per Foot- 2 per Big Toe 13 for the Rest
Articulations
(Joints) a Meeting Between 2 or More Bones or Between Cartilage and Bone
SYNOVIAL ARTICULATIONS
- Freely Moving Joints
- Possess a Cleft containing Synovial Fluid (Lubricant) Betwwen the Free surfaces of the bones
NON-SYNOVIAL ARTICULATIONS
- The “Immovable” joints
- The Lack a Cleft and Synovial Fluid
What is a Synovial Articulation
Bone Surfaces are Covered with CARTILAGE (Lubricant) and Seperated by CLEFT filled with Synovial Fluid
Gliding
Twisting Motion… I.E. Wrist and Ankle
Hinge
Up and Down Motion… I.E. Knee, Elbow, and Mandible
Saddle
Forward, Bakward, Sideward Motion…
I.E. Vertebral Column
Ball & Socket
Free Movement in all directions…. I.E. Scapula and Humerus/ Pelvis and Femur