Tissues Study Questions Flashcards
What tissue is considered filler tissue and contains lots of ground substance?
Areolar Loose Connective Tissue
What tissue contains fat droplets and is primarily used for energy storage?
Adipose Loose Connective Tissue
What tissue’s has no collagen and supports blood vessels as well as basement membranes?
Reticular Loose Connective Tissue
What are the two large classifications based on fiber density?
Loose and Dense
Which connective tissue has high tensile strength, no elastin and low blood flow?
Regular Dense Connective Tissue
Which connective tissue has extensive collagen with no pattern and strength in many directions?
Irregular Dense Connective Tissue
Which connective tissue has sheets of elastic fibers made of elastin?
Elastic Connective Tissue
What tissue provides some rigidity and flexibility at the same time?
Cartilage
What are some characteristics of cartilage?
High water content, avascular and aneural
What are the three types of cartilage?
Hyaline, Elastic, and Fibrous
Why is multicellularity beneficial? Why would multicellularity have evolved?
Allows cell specialization, thus increasing efficiency of the body’s overall function.
What is a tissue?
A group of the same type of cell performing the same specific function.
What are the four major types?
Epithelial, Muscle, Nerve, Connective
Why are cells separated in tissues separated into immature and mature types?
To carry out specific developmental patterns. The cell types are related in that they are both alive. Mature cells can go backwards for tissue repair, as needed.
What is an important function of mature cells?
Monitors surrounding tissue and performs the tissue’s function
What is an important function of immature cells?
Produces tissues and the surrounding extracellular matrix (ECM)
The suffix -blast refers to what kind of calls?
Immature
The suffix -cyte refers to what kind of cells?
Mature
What is epithelial tissue?
A type of tissue that forms the covering on all internal and external surfaces. of your body.
Secretion, absorption, and protection are the primary functions of what type of tissue?
Epithelial tissue
What characteristics define epithelial tissue and how does it make it so beneficial?
Polarity, tight junctions, basement membrane support, highly innervated but avascular, ability to regenerate
Why is muscle tissue so energy intensive?
Muscle cells fuel their chemical energy in the form of ATP, turning it into mechanical energy.
What is connective tissue?
Cells embedded in an extensive ECM
What are three types of fibers found in connective tissue?
Collagen, Elastic, and Reticular
What does collagen fiber do?
stores, transmits forces, and dissipate energy within connective tissue
What does elastic fibers do?
provides elasticity and extensibility to the dermis
what does reticular fibers do?
acts a supporting mesh in soft tissues such as liver, bone marrow, and the tissues and organs of the lymphatic tissue
Why does connective tissue have such extensive ECM?
Connective tissue has such extensive ECM because it gives the physical scaffolding for the cells. It also holds water, and provides a selective barrier to the external environment.
Why does scar tissue form?
Due to damage under the epithelium
What kind of tissues can easily form scar tissue?
Fibrous tissue can easily form scar tissue. Due to the scaffolding of collagen during scar tissue formation. Normal collagen fibers are woven together and are relatively flexible, as opposed to scar tissue collagen which are laid unidirectionally and not flexible.
How does tissue repair work?
1.Damage is initiated below the epithelium and the underlying blood vessels.
2.Inflammation is triggered. This triggers blood pooling, which contains clotting factors and immune cells. 3.Clotting factors bring on scab formation. The scab is then pushed up to the epithelium, while the epithelial layer regenerates. WBC gets rid of debris.
4.Epithelial tissue completely regenerates. Scar tissue fills the space, the function of original tissue is lost. Blood vessels feed the new scar.
Why are some tissues more repairable than others?
Blood flow or lack thereof.
What is the most important factor in tissue repair?
Blood vessel growth, as vessels support cells during growth and or repair.
