Tissues & Injury responses: skin & musculoskeletal system Flashcards
A reduction in plasma calcium ion levels would affect bone by:
causing increased osteoclast activity
Ligments connect what?
Bone to Bone
Cartilage connects what?
Nothing. It is for protection.
Tendons connect what?
Muscle to Bone
Fascia connect what?
Muscle to Muscle
What proteins are needed for muscle movement?
Myosin and Actin
What are the 4 main tissues
Epithelial, Muscle , Connective and Nervous
What does skin do?
Protects.
Regulates temperature.
Provides sensation.
What do osteoclasts do?
Chew/resorb old bone
What do osteoblasts do?
Build new bone
What are the 3 main layers that make up skin?
Epidermis, dermis and hypodermis
How many layers are there is the epidermis?
5
What are the 3 types of muscle?
Cardiac
Smooth
Skeletal
What are the types of connective tissue?
Cartilage
Tendons
Ligaments
What are the types of cartilage?
Hyaline, Elastic and Fibro
What is the most common type of cartilage?
Hyaline
Where would you find Fibrocartilage?
Knees, between vertebrae
Where do you find Elastic Cartilage?
Throat and ears
If someone has low calcium, what does that mean for their bones?
They will be bendy/flexible
If someone has low collage, what does that mean for their bones>
They will be brittle and break easily
What hormone is needed for the production of new bone?
Oestrogen
Why do males have more dense bones than women if they dont make oestrogen?
The testosterone is converted into oestrogen via the bones
Which connective tissues dont grow back and why?
Cartilage, as they do not have any blood vessles.
Which connective tissue has more matrix than cells?
Cartilage
What are the strap like ropes that connect bones together?
Ligaments
What is primary homeostasis
When platelets join gather at the sight of trauma, and together with fibrinogen they form a plug to stop blood from getting out.
What is secondary homeostasis?
When the blood clots/thickens to prevent blood loss
What hormones affect bone remodeling?
Parathyroid, Calcitonin
How does epithelial tissue adapt to perform its function
Epithelial tissue has tightly packed cells with specialized structures like microvilli and cilia for absorption and secretion
How does muscle tissue adapt to perform its function
Muscle tissue has contractile proteins that enable it to generate force and create movement
How does connective tissue adapt to perform its function
Connective tissue has cells dispersed within an extracellular matrix that provides strength and flexibility
How does nervous tissue adapt to perform its function
Nervous tissue has specialized cells called neurons that transmit electrical signals for communication
briefly describe the steps of the healing process of skin tissue
- Tissues initiate an inflammatory response to remove damaged cells and debris.
- New blood vessels form in the area to deliver oxygen, nutrients, and immune cells.
- Cells called fibroblasts produce new collagen fibres, rebuilding the tissue.
- Tissue remodelling and maturation occur, where the new tissue gains strength and functionality.
What are the benefits of pain?
Pain acts as a protective mechanism, alerting the body to potential injury and preventing further damage.
What are the benefits of inflammation?
Inflammation helps initiate the healing process by bringing immune cells and nutrients to the damaged area, fighting infection, and promoting tissue repair
What are the major types of joints and their functions
- Fibrous joints: Connected by fibrous connective tissue and allow minimal to no movement.
- Cartilaginous joints: Joined by cartilage and permit limited movement.
- Synovial joints: Contain a synovial cavity filled with synovial fluid, allowing a wide range of movement.
Explain how synovial joints are adapted to allow movement and minimise joint wear and tear
- Synovial joints have articular cartilage to provide a smooth surface for joint movement and reduce friction.
- The synovial membrane secretes synovial fluid, which lubricates the joint and nourishes the articular cartilage.
- Ligaments and tendons provide stability and guide the movement of synovial joints.
Major factors influencing tissue healing:
- Blood supply
- Severity of damage
- Age
- Innflammation and infection
- Treatment and management