Skeletal System Exam Revision Flashcards
Name 4 functions/purpose of the skeletal system
Provides body with a framework to suspend muscles and organs
Provides: protection and support
Contains Joints which create movement.
What attaches muscle to a bone
Tendons
What type of tissue is a tendon
Connective Tissue
What can be found inside a bone and name the 2 types
Bone Marrow
Red and Yellow
What does red bone marrow produce
ALL cells
Name 3 types of cells produced in the red bone marrow
Erythrocytes
Thrombocytes
Leukocytes
What is the main type of blood cancer
Leukaemia
What is a common symptom of blood cancers
Bone Pain
Which parts of the skeleton contain red bone marrow (name 2)
Axial Skeleton
Apendicular skeleton
What does the skeleton provide a large surface area for
Mineral Homeostasis
Name 3 minerals found in the skeleton
Calcium
Magnesium
Phosphorus
Describe 3 properties of bone
Living
Has rich blood supply
Strong but flexible
What can be found/is stored in Yellow Bone Marrow
Triglycerides (Fats)
What type of cells are ALL bone cells
Osteogenic Cells
What process do bone cells undergo to reproduce/replicate.
Mitosis
What is the name for an immature bone building cell
OsteoBlast
What is the name for a mature bone cell
Osteocyte
Name 2 substances that Osteoblasts secrete
Collagen
Bony Matrix
What is the name of the bone cell responsible for breaking down of bone
Osteoclast
What do Osteoclasts contain which help to break down the bone matrix
Lots of Lysosomes
What happens on a cellular level if some experiences Osteoporosis
Too much osteoclast activity compared to osteoblast activity.
Name 2 things which contribute to bone building activity
Weight bearing exercises stimulates osteoblast activity
Sex Hormones - Oestrogen
Give another risk factors for developing Osteoporosis (aside from age)
Trauma eg fractures or surgery
Give an example Type and name of a bone where Compact Bone can be found
Long Bone - Femur
Name 2 features of compact Bone.
Always on outside of bone
Strong
What is the double layered membrane called of compact bone
Periosteum
Looking at a femur - name the two parts - both ends and shaft
Epiphysis (ends) and Diaphysis (Long shaft)
What does the distal epiphysis mean
Farthest away
Name 2 hormones which stimulate bone development
Growth Hormone
Thyroid Hormone
Other than Growth Hormone and Thyroid hormone name others which can impact on bone development.
Testosterone
Oestrogen
Name the location on a bone which synthesises bone from cartiledge cells
Epiphyseal Growth Plate
What does the Epiphyseal Growth Plate do
Causes a bone to get longer
Explain how a bone can get thicker - ie the process
By using Osteoblasts in the Periosteum
Define Gout
Uric acid crystal deposits in synovial joints
Who is most prone to Gout
Men over 40 years
Describe the process by which Gout forms in the body
Uric acid crystals form on cartilage surfaces.
White Blood Cells activate acute inflammation
What can you expect to see in blood tests from someone suffering with Gout
HyperUricaemia: an elevated level of uric acid in the blood
Name 2 causes of HyperUricaemia
Overproduction of Uric acid
Underexcretion of Uric acid
Name a dietary cause of Gout
High intake of purine rich foods
Name 4 symptoms of Gout
Painful/Red/Hot/Swollen Joints
Shiny skin over joint
Monoarticular (one joint)
Name a common joint which can be affected by Gout
Big Toe
What is a Tophi - in Gout
Urate crystal deposit causing a nodule under the skin
Name 2 Allopathic Treatments for Gout
Allopuronol
Corticosteriod Injections
Name 3 types of muscle
Skeletal
Cardiac
Smooth
Name 2 striated muscle types
Cardiac
Skeletal
Is Smooth muscle striated or non striated
Non striated
Name a type of voluntary muscle
Skeletal
Name 2 types of Involuntary muscles
Cardiac
What type of disease is Osteoarthritis (what causes)
Degenerative - wear and tear
What type of disease is Rheumatoid Arthritis (causes)
Autoimmune
What tissues are affected in Osteoarthritis
Articular Cartilage
What tissues are affected in Rheumatoid Arthritis
Synovial Membrane
What types of joint are affected in Osteoarthritis
Large weight bearing joints eg Hip and Knee
What types of joint are affected in Rheumatoid Arthritis
Any synovial joints (systemic)
What is the age of onset for Osteoarthritis
50 plus
What is the age of onset for Rheumatoid Arthritis
30 to 50
Does Osteoarthritis affect both sides
No - asymmetrical
Does Rhueumatoid Arthritis affect both sides
Yes - symmetrical
What can you expect to see on radiology tests for Osteoarthritis
Narrowed joint space and osteophytes
What can you expect to see on radiology tests for Rheumatoid arthritis
Bone erosions on x ray
What will blood tests find for osteoarthritis
Nothing Abnormal
What will blood tests find for Rheumatoid Arthritis
Raised CRP levels
Raised ESR levels (rheumatoid factor)
Name 4 signs and symptoms of Osteo arthritis
Gradual onset: months or years to develop
Morning stiffness: less than 30 minutes
Joints become disformed: eg distal fingers
No systemic symptoms
Bone spurs form
Name 4 signs and symptoms of Rheumatoid Arthritis
Bi-lateral/symmetrical joint pain: hands and feet mostly (small joints)
Morning stiffness:
more than 1 hour
Deformities occur:
Swans neck fingers
Systemic Symptoms:
Weight loss, fatigue
Subcutaneous Nodules
Name 2 triggers for Rheumatoid Arthritis
HLA-DR4 and DR1 gene
Environmental Triggers