PASS 2024 Flashcards
(211 cards)
What are the 5 functions of the Skeletal system?
- Framework and Structure for supporting the body
- Facilitating movement
- Protection, especially of vital organs
- Blood cell production
- Store Minerals
Describe how the skeletal system provides framework and structure for supporting the body
The Skeletal system forms the body’s framework, providing essential structure and stability, crucial for maintaining posture, balance and coordination. For example, the large bones of the lower limbs, such as the femur and tibia, bear the body’s weight, which supports the trunk while standing, walking or running.
Describe how the skeletal system facilitates movement.
The skeletal system provides levers and anchors for muscles to pull against. The muscles, connective tissue and bones form a part of a movement relationship, allowing the body to move in controlled and predictable movement patterns; for example running and throwing.
Describe how the skeletal system allows for protection, especially of our vital organs.
Bones of the skeletal system protect vital organs. For example, the ribcage protects the lungs, the sternum protects the heart, the skull protects the brain and the vertebrae protects the spinal cord.
Describe how the skeletal system allows for blood cell production.
Red and White blood cell production occurs within the bone marrow of bones and is created to aid bodily functions. Red blood cells transport oxygen in haemoglobin and important nutrients to our organs and tissues. Red blood cells also carry Co2 back to the lungs for exhalation. White blood cells are important for fighting infection and disease.
Describe how the skeletal system allows for the storing of minerals.
Bones in the skeletal system store essential supplies of minerals, mainly calcium. Calcium maintains bone density and allows blood to clot and muscles to contract. When the body is calcium deficient, it relies on the calcium stored in the bones to replenish levels in the bloodstream. This makes the bones brittle and prone to injury and over time, can lead to osteoporosis.
Name the main bones in the skeletal system: https://www.purposegames.com/game/label-the-skeleton-game
https://www.purposegames.com/game/label-the-skeleton-game
What makes up the skeletal system?
Bones, cartilage, ligaments and tendons.
What are the external functions of the skeletal system
Structure, movement and protection of our vital organs.
How many bones does the adult body have?
206
What are the internal functions of the skeletal system?
Blood cell production and storing of minerals
Outline the role of the Appendicular skeleton
The appendicular skeleton includes 126 bones which make up our upper and lower limbs and include bones such as the humerus, radius, femur and tibia. The main function of the appendicular skeleton is facilitating movement. For example, the femur in the legs works with muscles, joints, the tibia and the fibula to allow for movements such as running and walking. The bones in this part of the skeleton also store and make red and white blood cells as well as other important nutrients in the bone marrow of bones. Similar to the axial skeleton, the appendicular skeleton also provides a framework for our bodies.
Outline the role of the Axial Skeleton
The axial skeleton includes 80 bones divided into the skull, vertebral column, and thoracic cage regions. The axial skeleton is important for the protection of vital organs such as the brain, heart, lungs and spinal cord. This skeleton also provides shape and framework for our body and therefore provides a stable platform for many movements. For example, it supports the head and neck, allowing for movements such as bending, twisting and nodding.
Outline what joints are and their role in the human body
A joint is a place where two or more bones meet. Almost every bone in the body has formed at least one joint with another bone. Joints facilitate movements and allow for stability by increasing compression across the joint surface at the moment of loading.
All joints are put into three categories, what are these categories?
Fixed joints (unmovable) - Synarthrosis
Cartilaginous joints (slightly movable) - Amphiarthroses
Synovial joints (freely movable) - Diarthroses
Explain cartilaginous joints
Cartilaginous joints provide small and limited movement of bones. The most common example is the vertebral column. The vertebral column is the joining of the vertebra through fibrous cartilage, called vertebral discs, in an ‘S’ shape to protect the spinal cord.
Explain fixed joints
Fixed joints are two joints where no movement is possible due to no connective tissue like ligaments and tendons but instead fibrous connective tissue. An example is the bones in the skull, which protect the brain.
Explain synovial joints
Synovial joints allow for maximum movement and help us with day-to-day activities. Examples are the joints in the hips, knees and elbows.
Synovial joints are the most common type of joint in the body and can be classified into 6 types. What are these 6 types?
- Ball and Socket Joint
- Hinge Joint
- Condyloid joint
- Saddle Joint
- Pivot joint
- Gliding Joint
What are the features of all synovial joints?
- A membrane that lines the outside of the joint
- Contain synovial fluid
- Rely on ligaments
- Include cartilage
What movements do the Condyloid joint allow for? And what are some examples of this joint?
Facilitates the movements of flexion, extension, adduction, abduction and circumduction. Examples include the wrist joints.
What movements do the ball and socket joint allow for? And what are some examples of this joint?
Ball and Socket Joints facilitate the movements of flexion, extension, adduction, abduction, rotation and circumduction. Examples of this joint include the hip and shoulder joints.
What movements do the Hinge joint allow for? And what are some examples of this joint?
Facilitates the movements of flexion and extension. Examples include the joints in the elbows, knees and fingers.
What movements do the saddle joint allow for? And what are some examples of this joint?
Facilitates the movements of flexion, extension, adduction, abduction and circumduction. Examples include the joint where the thumb joins the hand.