Test #3 - Class 4: Axial Skeleton: Vertebrae and Ribs; Class 5: Appendicular Skeleton: Pectoral Girdle/Upper Extremeity Flashcards
How many vertebrae in the Vertebral Column?
26 vertebrae
How many divisions in the Vertebral Column?
5 divisions
What are the 5 divisions of the Vertebral Column?
- Cervical; 2. Thoracic; 3. Lumbar; 4. Sacrum; and 5. Coccyx
How many vertebrae in the cervical division of the Vertebral Column?
7 vertebrae
What are the 7 vertebrae of the cervical division named?
- C1 or Atlas; 2. C2 or Axis; 3-7: C3…C7
Vertebral Column: Cervical
The smallest vertebrae. Allow greatest amount of movement. Spinous processes are “bifid” or forked for muscle attachments.
Cervical Vertebrae: C1
Known as Atlas, has no body or spinous process. It is a ring of bone, so you can move your nod your head “yes”.
Cervical Vertebrae: C2
Known as Axis, has a process called “dens” which is a finger-like projection of bone sticking straight up, so you can rotate your head side to side “no”.
Why are cervical vertebrae small in size?
Because they don’t support a lot of weight.
How many vertebrae in the thoracic division of the Vertebral Column?
12 vertebrae
What are the 12 vertebrae of the thoracic division named?
1-12: T1…T12
Vertebral Column: Thoracic
A little larger than cervical, supporting more weight. Less range of motion, because of rib attachments. Spinous processes tend to angle downward.
How many vertebrae in the lumbar division of the Vertebral Column?
5 vertebrae
What are the 5 vertebrae of the lumbar division named?
1-5: L1…L5
Vertebral Column: Lumbar
Most of us have 5, some have 6! Bigger in size than vertebral. Largest in size in the vertebral column, supporting a lot of weight. More range of motion than thoracic, but less than C-spine (or cervical). Spinous processes are hatchet shaped; squared off like an ax.
How many vertebrae in the sacral division of the Vertebral Column?
5 fused vertebrae
How many vertebrae in the coccyx division of the Vertebral Column?
4 fused vertebrae
Normal Curve of the Spine: Cervical
C-spine is posteriorly concave (curves inward)
Normal Curve of the Spine: Thoracic
T-spine is posteriorly convex (curves outward)
Normal Curve of the Spine: Lumbar
L-spine is posteriorly concave
Normal Curve of the Spine: Sacrum & Coccyx
Sacrum and Coccyx are posteriorly convex
How does the human spine achieve it’s S-shape?
In vitro, the whole spine is posteriorly convex. When the head is lifted the C-spine becomes concave. When the body stands, the L-spine becomes concave. The sacrum and coccyx remain convex because they are fused.
How many pathological curves of the spine?
3 pathological curves of the spine
What are the 3 pathological curves of the spine?
- Scoliosis; 2. Kyphosis; and 3. Lordosis
What is scoliosis?
Lateral curves of the vertebral column.
What is kyphosis?
Posterior convex curve, or exaggerated thoracic curve (e.g. humpback)
What is lordosis?
Posterior concave curve, or exaggerated lumbar curve (e.g. swayback or bubble butt)
What does structural pathology refer to?
“Born that way”
What does functional pathology refer to?
Occurs due to repetitive use or poor posture.
Typical Vertebrae: Body
Anteriorly located. Supports the weight. Roughened surface (to keep discs from slipping out).
Why is the surface of the body of the typical vertebrae roughened?
To keep discs from slipping out.
Typical Vertebrae: Vertebral Foramen
Hole for the spinal cord.
Typical Vertebrae: Intervertebral Foramen
Lateral hole which is created between adjacent vertebrae. Passageway for spinal nerves.
What does “inter” refer to?
Between
Typical Vertebrae: Transverse Process
(2) - Lateral projection off the vertebrae which serve as muscle and ligament attachment sites as well as rib attachments.
Typical Vertebrae: Spinous Process
(1) - Posterior projection off the vertebrae. Serves as a muscle and ligament attachment site.
Typical Vertebrae: Lamina Groove
Channel created between spinous and transverse processes. Muscles, tendons and ligaments are located here.
Typical Vertebrae: Articulating Facets
Flat surfaces on the vertebrae which meet up with the flat surfaces on the vertebrae above and below to form a joint.
What does “articulating” refer to?
Where bones come together and touch
What does “facet” refer to?
Flat surface of bone
Typical Vertebrae: Intervertebral Disc
A fibrocartilage pad sitting between the bodies of adjacent vertebrae. They allow for movement and some shock absorbency.
How many regions within an Intervertebral Disc?
2 regions
What are the 2 regions within an Intervertebral Disc?
- Nucleus pulposus; and 2. Annulus fibrosus.
Intervertebral Disc: Nucleus Pulposus
Soft, gel-like center made up of mostly water
Intervertebral Disc: Annulus Fibrosus
The outer region made up of a dense collection of collagen fibers.
How many pathological concerns (precautions for Massage Therapists) of the vertebral column?
4 pathological concerns (precautions for Massage Therapists)
What are the 4 pathological concerns (precautions for Massage Therapists) of the vertebral column?
- Herniated disc (slipped, bulging); 2. Ruptured disc; 3. Nerve root impingement; and 4. Subluxation
What is a herniated disc (slipped, bulging)?
Occurs when nucleus pulposus pushes out into annulus fibrous.
What is a ruptured disc?
Occurs when the nucleus pulposus erupts through the annulus fibrosus.
What is nerve root impingement?
Compression of a spinal nerve due to soft tissue or bone.
What is subluxation?
Vertebrae out of alignment.
What bones make up the bony thorax?
- Sternum; and 2. Ribs
How many regions of the sternum?
3 regions
What are the 3 regions of the sternum?
- Manubrium; 2. Body; and 3. Xiphoid process
Sternum: Manubrium
Superior portion of the sternum.
Sternum: Body
Mid portion of the sternum.
Sternum: Xiphoid Process
Inferior portion of the sternum.
How many bones in the sternum?
1 bone
How many ribs?
12 pairs (or 24 total)
How many types of ribs?
3 types
What are the 3 types of ribs?
- True ribs; 2. False ribs; and 3. Floating ribs
Ribs: True Ribs
Pairs 1-7: Directly attach to the sternum.
Ribs: False Ribs
Pairs 8-12: Don’t attach directly to the sternum (8-10 attach via cartilage to rib 7, the last true rib)
Ribs: Floating Ribs
Pairs 11 and 12: Don’t wrap all the way around; they “float” in the abdomen.
Where do ribs attach?
Not all ribs attach in the front, but all ribs attach in the back.
All ribs attach posteriorly to the vertebrae at the transverse process and body.
What does it mean to palpate?
To examine or explore by touching (an organ or area of the body), usually as a diagnostic aid.
What are the 3 skills involved in palpating?
- Locating a structure; 2. Becoming Aware of its characteristics; and 3. Assessing its quality or condition
Palpation: Mastoid Process
Bone marking on the temporal bone posterior to the external auditory meatus
Palpation: External Occipital Protuberance
Bone marking on the posterior occipital bone Bump on the back of the skull
Palpation: External Auditory Meatus
Ear canal
Palpation: Mandibular condyle
Jaw bone; part of the temporomandibular joint (TMJ) where i meats the mandiubular fossa on the temporal bone; anterior to the external auditory meatus
Palpation: Spinous process of C7
Flex head, last cervical vertebrae, T1 is fixed in location; C7 will fall away as head is lifted
Palpation: Spinous process of T7
Put hand behind back to emphasize the scapula; follow inferior angle medially to spine to locate T7
Palpation: Spinous process of L4
Locate iliac crest and follow posteriorly and medially to the spine to locate L4
Palpation: Spinous process of L5
Travel inferiorly 1 vertebra to locate L5
Palpation: Sacrum
Travel inferiorly 1 vertebra to locate the sacrum (5 fused vertebrae)
What makes up the Appendicular Skeleton?
- The Pectoral Girdle; 2. The Upper Extremities (Upper Limbs); 3. The Pelvic Girdle; and 4. The Lower Extremities (Lower Limbs)
How many bones make up the Pectoral Girdle?
4 bones
What are the 4 bones of the pectoral girdle?
- Scapula (2); and 2. Clavicle (2)
How many bones in the Appendicular Skeleton?
126 bones
The pectoral girdle refers to what?
The Shoulder (collar bone/clavicle + shoulder blades/scapula)
How many bones in the upper extremity?
30 per limb (or 60 total)
Where does the Upper Extremity attach?
The clavicle
Does the scapula attach to the ribs?
No
Why does the upper extremity only attach at one point?
Greater range of motion
Where does the clavicle attach to the sternum?
The manubrium
What is the only bony attachment of the appendicular skeleton to the axial skeleton?
The clavicle attaches to the manubrium of the sternum.
How many bone markings on the scapula?
12 bone markings
What are the 12 bone markings of the scapula?
- Spine; 2. Acromion; 3. Glenoid cavity (or fossa); 4. Medial border (or vertebral border); 5. Lateral border (or axillary border); 6. Superior border; 7. Inferior angle; 8. Superior angle; 9. Infraspinous fossa; 10. Supraspinous fossa; 11. Subscapular fossa; and 12. Coracoid process
Scapula: Spine
No muscle on top of it. Runs from the medial border to the acromion.
Scapula: Acromion
Most lateral edge of scapula is flat.
Scapula: Glenoid cavity (or Glenoid fossa)
A shallow depression on the lateral scapula that forms 1/2 of the shoulder joint.
Scapula: Medial border (or Vertebral border)
Runs superior to inferior angle
Scapula: Lateral border (or Axillary border)
Runs from inferior angle to glenoid cavity.
Scapula: Superior border
Runs from superior angle to glenoid cavity.
Scapula: Inferior angle
Lowest point/tip of scapula.
Scapula: Superior angle
Highest point/tip of scapula.
Scapula: Infraspinous fossa
Shallow depression below spine of scapula.
What does “infra” refer to?
Below
Scapula: Supraspinous fossa
Shallow depression “above” spine of scapula.
What does “supra” refer to?
Above
Scapula: Subscapular fossa
Shallow depression on the anterior scapula facing the ribs.
What does “sub” refer to?
Below
Scapula: Coracoid process (Bird’s beak)
A pointy projection just along the underside of the clavicle.
What are the 60 bones of the Upper Extremity (UE)?
- Humerus (2); 2. Ulna (2); 3. Radius (2); 4. Carpals (16); Metacarpals (10); Phalanges (28)
UE: Humerus
(2) - Brachial region (arm)
How many bone markings on the humerus?
8 bone markings
What are the 8 bone markings on the humerus?
- Head; 2. Greater tubercle; 3. Lesser tubercle; 4. Bicipital groove; 5. Deltoid tuberosity; 6. Medial epicondyle; 7. Lateral epicondyle; 8. Lateral supracondylar ridge
Humerus: Head
Proximal rounded region covered with articular cartilage. Forms 1/2 of the shoulder joint.
Humerus: Greater tubercle
Proximal, lateral humerus. Has 3 facets just distal to the acromion.
Humerus: Lesser tubercle
Proximal, anterior humerus.
Humerus: Bicipital groove
Lies between the greater and lesser tubercles on the proximal humerus.
Humerus: Deltoid tuberosity
A roughened region on the lateral humerus about 1/2 way down.
Humerus: Medial and Lateral epicondyles
Distal end of humerus. They are the 2 prominent bumps felt on the distal medial and lateral humerus with fixed elbows.
What does “epi” refer to?
Above
Humerus: Lateral supracondylar ridge
A sharp ridge of bone which runs proximal from the lateral epicondyle to the deltoid tuberosity.
UE: Ulna
(2) - Medial forearm, larger bone
UE: Radius
(2) - Lateral forearm, smaller bone
UE: Ulna + Radius
Forearm
How many bone markings on the ulna?
2 bone markings
What are the 2 bone markings on the ulna?
- Olecranon process; and 2. Styloid process
Ulna: Olecranon process
Elbow; located on the proximal posterior ulna
Ulna: Styloid process
The distal end of the ulna
How many bone markings on the radius?
3 bone markings
What are the 3 bone markings on the radius?
- Head; 2. Radial tuberosity; and 3. Styloid process
Radius: Head
The proximal, disc-shaped region
Radius: Radial tuberosity
Proximal, medial radius (just distal to the head)
Radius: Styloid process
Very distal end of radius.
UE: Interosseus membrane
Holds the radius and ulna together and serves as an attachment site for muscles.
UE: Carpals
(16) - Wrist - 2 rows of bones (proximal and distal; lateral [thumb side] to medial)
Some Lovers Try Positions That They Cannot Handle
Proximal: Scaphoid Lunate Triquetral Pisiform
Distal: Trapezium Trapezoid Capitate Hamate
UE: Metacarpals
(10) - Hand bones; numbered 1-5 thumb side first
UE: Phalanges
(28) - Digits; proximal, intermediate and distal phalanx
UE: How many major joints in the upper extremity?
3 major joints
What are the 3 major joints of the upper extremity?
- Shoulder; 2. Elbow; and 3. Wrist
Shoulder joint:
Head of humerus + glenoid cavity of scapula.
Elbow joint:
Distal humerus + proximal ulna + proximal radius
Wrist joint:
Distal radius + scaphoid carpal + lunate carpal