Skeletal System Flashcards

1
Q

What is the importance of skeletal System

A

Provide support, shape, structure and protection for the body and production of red blood cells (Hematopoiesis)

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2
Q

What is a skeletal system

A

Interconnected system of bones, ligaments and tendons

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3
Q

Name the two divisions of skeletal system and provide an example

A

Axial Skeleton (Middle)
- Head bones, Facial bones, spinal column, coccyx

Appendicular skeleton
- long, short, irregular, sesamoid and flat

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4
Q

Differentiate diaphysis from epiphysis

A

diaphysis (compact bone) and epiphysis (spongy bone)

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5
Q

Give examples of long bones, short bones, irregular, flat and sesamoid bones

A

Long - humerus and femur
Short - carpals and tarsals
Sesamoid -knee cap
Irregular - vertebrae
Flat- skull

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6
Q

What is periosteum

A

bone covering that protects bones

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7
Q

What is a marrow cavity

A

the inside of the bone

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8
Q

Differentiate joint, tendons and ligament

A

Joint is the point where bones meet or articulations
Tendons- are muscles attached to bones
Ligaments- elastic tissue that restricts movement, attaches bones and muscles

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9
Q

Give example of long bones in arms and legs

A

Arm
- humerus, ulna, radius
Legs
- femur, fibula, tibia

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10
Q

Differentiate ulna from radius and fibula from tibia

A

ulna - longer and thinner and is in the medial side of the forearm and extends from elbow to pinky
radius - thicker and is on the lateral side of the elbow

Fibula- thinner and smaller bone on the outside
Tibia - thicker and larger and is in the inside

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11
Q

what are short bones and how do they differ from long bones

A

Short bones are found in areas where strength, compactness, and limited movement are desired

Long bones are found in limbs

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12
Q

Examples of short bones

A

Carpals and tarsals
Metacarpals and metatarsals
phalanges

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13
Q

How many bones are there in the skeletal system

A

206 bones

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14
Q

Differentiate flat bones from irregular bones

A

flat bones is found in areas where protection or muscular attachment is desires

Irregular bones have a fairly complex shape, which helps protect internal organs

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15
Q

Gives examples of flat bones

A

thoracic area, chest, skull and scapula

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16
Q

Examples of irregular bones

A

vertebrae, sphenoid, hyoid and spinal column

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17
Q

What are sesamoid bones and give an example

A

sesamoid bones are round bones. example: patella

18
Q

What is a cartilage and why is it important in the skeletal system

A

cartilage is a substance between bones. It is important because it Avoids breakage of bones when it moves and Gives allowance for bones to move w/o creating friction and allows certain movements

19
Q

What is a obturator foramen

A

Large hole through which nerves and muscles pass

20
Q

Role of pelvis in Skel. System

A
  • base for appendicular skeleton
  • Juncture point for axial skeleton and lower body
21
Q

How many bones are found in hands and feet?

A

27 each hand and 26 each foot

carpals -8 bones
tarsals - 7 bones
metacarpals - 5
metatarsals - 5
phalanges- 5

22
Q

What is a shoulder girdle

A

-called are pectoral girdle
composed of two bones: clavicle and scapula

23
Q

difference of clavicle from scapula

A

Clavicle (collar bone) is anterior and attached laterally to scapula. Acts as a brace, keeping arm away from thorax

Scapula (shoulder blade) is posterior and is an attachment of shoulder. Major point for muscle attachment for arm movements

24
Q

What are the classification of joint by mobility

A

Synarthrosis
- immovable joint
- Stable joints
Amphiarthrosis
- slightly moveable joint
- Combination of both synarthrosis and Diarthrosis
Diarthroses
- Freely movable

25
Q

Give examples of joints

A

Pivot Joints
Balls and Socket
Elbow Joint
Saddle Joints
Plane Joint

26
Q

Classification by connective tissue

A

Fibrous - usually synarthroses
Synovial - diarthrosis
cartilaginous - amphiarthrosis

27
Q

examples of fibrous, synovial and cartilaginous joints

A

fibrous- sutures of skull
synovial - knees, legs, hands, and fingers
cartilaginous - intervertebral joints

28
Q

what are the two attachments to the Forearm and define

A

-Trochlea articulate against bones of
forearm
-Olecranon fossa Shaped like spoon

29
Q

Explain the processes of the ulna

A

Olecranon process attached to humerus at olecranon fossa
Allows for articulation between upper and lower arm

30
Q

What are the spinal column composed of

A

-Cervical bones
- Thoracic bones (ribcage)
- Lumbar bone (lower back)
- Pelvic area bone (hips)
- Sacral Bones

31
Q

Dirrentiate head bones from facial bones

A

Head bones -Collection of eight bones which hold and protects the brain

Facial bones- 14 bones that makes up the face

32
Q

8 head bones

A

Frontal
Occipital
Parietal
Temporal
Sphenoid
Zygomaticos
Maxilla
Mandible

33
Q

14 facial bones

A

Maxilla
Mandible
Palatine
Lacrimal
Nasal
Zygomaticus
Orbital
Vomer
Sphenoid
Ethmoid
Inferioir nasal conchae
cribriform bone
Sinuses

34
Q

What is intervertebral discs

A

Pads of cartillage between each vertebrae that provides cushioning to reduce shock

35
Q

Difference of ribs and bony thorax

A

Bony thorax - composed of connected bones that protects hearts and lungs. Composed of ribs, cotasl cartillage and sternum

Ribs - component of bony thorax that has 12 pairs of bones connected to a thoracic vertebrae

36
Q

How many bones are there in the ribs and how many are true and how many are false and explain why it is false.

A

12 pairs of bones
7 true
5 false (2 pairs are floating)
False because they are not directly attched to the sternum

37
Q

What is a sternum

A

It is a fusion of 3 bones which are manubrin (top), body (middle) and xiphoid process (bottom)

It is a location for rib attachemenr and surrounded by costal cartilage

38
Q

What is a costal cartilage

A

Cartilages that connects the distal ends of the ribs to sternum and permit movement of the chest during respiration

39
Q

What is a spinal column

A

-made up of 26 bones that supports the body
-connects skull to pelvis
-sends weight down to pelvis, where it is transmitted through the legs
-surround and protects spinal cord

40
Q

What are the 4 divisions of the spinal column

A

Cervical
Thoracic
Lumbar
Pelvic

41
Q

Give how many bones for each spinal division

A

Cervical-7
Thoracic - 12
Lumbar - 5
Pelvic - 9 (5 sacrum and 4 coccyx)

42
Q

What is the normal shape of the spine and give its abnormalites and explain

A

Normal shape - S

Abnormalities:
Scoliosis - sidewyas curvature of spine
Kyphosis - forward rounding of upper back (shoulder is forward)
Lorodosis - inward curve of lumbar spine ( shoulder back with tummy forward)