Support and Movement Flashcards
What are the levels of organization in the human body?
- Atoms
- Molecules
- Macromolecules
- Cells
- Tissues
- Organs
- Organ Systems
What are the 4 types of tissue?
- Epithelial
- Nervous Tissue
- Muscle Tissue
- Connective Tissue
What is the role of Epithelial Tissue?
To cover the body surface. line cavities, form glands
What is the role of nervous tissue?
receive, transmit and integrate information to control the body.
What is the role of muscle tissue?
Responsible for movement
What is the role of connective tissue?
Support and protect other tissues, as well as binding together tissue and allowing for storage of fats and minerals.
What are examples of connective tissue?
Blood, bone, ligaments, tendons & intervertebral disk.
What does connective tissue consist of?
A few cells and an extensive extracellular matrix which define the structure and properties.
What are the forms of connective tissue?
- Loose connective tissue
- Fibrous connective tissue
- Cartilage
- Bone
Where is loose connective tissue found?
It is the most widespread, and is found between and around organs, beneath the skin and in the endomysium layer.
Where is fibrous connective tissue found?
In tendons, dense with bundles of collagen fibers.
What are the main roles of fibrous tissue?
- Provide some shock absorption
- Transmit force from muscle to bone
Where is cartilage found?
Between ribs, in the ear, nose and at the end of long bones which provides cover and protection.
What are chondrocytes and what do they do?
Chondrocytes are cartilage cells, which secrete collagen and other substances, to make tissue strong and flexible.
How is bone formed?
Bone is mineralized connective tissue.
1. Osteoblast deposit collage
2. Osteocytes maintain the matrix with minerals.
3. Osteons are concentric layers of the mineralized matrix around blood vessels in compact bone
Skeletal muscle organ =
muscle tissue + connective tissue
What are the three types of muscle?
Cardiac, Skeletal and smooth
What types of muscles are striated?
Cardiac and Skeletal
What types of muscle have a single nuclei?
Smooth and Cardiac
How is cardiac tissue connected?
By inculcated disc which allows transfer of action potential and helps synchronize heart muscle contraction.
Where is smooth muscle located?
Walls of the gastrointestinal tract, lymphatic vessels, blood vessels, skin and iris
What is smooth muscle responsible for?
Involuntary actions
What gives skeletal muscle its striations?
The arrangement of sacrcomeres
Skeletal muscle is controlled by what nervous system?
Somatic Nervous System
