3. Cellular Specialization Flashcards
Define
Tissue
A group of similar cells that function together as a unit to accomplish specific functions.
Similar, but not necessarily identical
True or False
All cells of a tissue must be identical.
False
A tissue is a group of cells, whether identical or not, contributing to the same function in the body. Therefore, it is not necessary for all cells to be identical to constitute a tissue.
True or False:
To be considered a tissue, the cells must adhere to each other. The adhesion is the result of either a substance covering the cells or from an intertwining of fibres between the cells.
True!
Adhesion is an important characteristic of tissue cells
Name:
4 types of tissues
Connective tissue
Epithelial tissue
Muscle tissue
Nervous tissue
Where is the epithelial tissue found?
It covers and protects organs on the inside and outside of the body
1. skin
2. salivary gland
3. small intestine
4. kidney
Describe
Role of the epithelial tissue
The epithelial tissue secrets, absorbs and filters substances.
Identify:
The most common type of tissue found throughout the body.
The connective tissue
Give 5 exemples
Connective tissue
ex1: tendons
ex2: cartilage
ex3: fatty tissue
ex4: bone tissue
ex5:blood tissue
Describe
What is the role of the connective tissue
The connective tissue binds (connects) and supports tissues and organs in the body.
Identify:
2 characteristics of the muscle tissue
- It can contract and regain it’s shape so body can move.
- The contraction can be volontary or involontary.
Identify
Tissue made up of neurons
Nervous tissue
Identify
Type of tissue found outside of the body (ex: skin)
The epithelial tissue
Identify
Tissue that line the respiratory tract
The endothelial tissue
True or false
Blood is a type of connective tissue
True!
Name
Muscle tissue whose contractions are involontary
Cardiac muscle tissue (ie, the heart)
Identify:
3 types of muscle tissue
- Skeletal muscle tissue (attached to bones)
- Smooth muscle tissue
- Cardia muscle tissue
identify
3 organs where smooth muscle tissue plays a role
It the lining of organs that contact like
1. stomack
2. bladder
3. uterus
4. some blood vessels
Describe:
The fonction of nerve tissue
Control and guide the activities of the body so message can go from the brain to other parts of the body.
FIll the blank
The functions of the ____ tissue consist in receiving external stimuli, analyzing them, and transmitting a response
Nervous tissue
What kind of tissue is this:
Nervous tissue
Fill the blank:
____ tissue is made up of elongated cells that have the ability to contract.
Muscle tissue
Identify
3 locations where nerve tissue can be found
- brain
- nerves
- spinal cord
Define
Organs
A group of two or more different tissue types that perform one or more specific functions.
GIve exemples
Organs
- stomach
- heart
- lungs
A structure composed of tissues grouped together to perform one or more specific functions is called an ____.
organ.
Define
Systems
A group of tissues and organs that work together to accomlish a common task.
FIlls the blanks
A ____ is a group of ____ and ____ working together to accomplish a ____.
system
tissues
organs
common purpose.
Fill the blank:
SPECIALIZED CELLS that perform a common function are called ____
tissues
various types of ____ can form an ____, which can form systems, which in turn form an ____, in this case, a human being.
tissue
organ,
systems,
organism,
Describe:
The role of the cardiac system
The cardiac system
1. circulates blood
2. tansports nutrients
3. eliminates waste
Describe:
The role of the digestive system
Breaks down and absorbs nutrients and eliminates waste.
Describe:
The role of the excretory system
Makes sure that waste leaves the body
Describe
The role of the lymphatic system
Works with the immune system to fight foreign microorganisms
Describe
The role of the musculoskeletal system
Gives body support and mobility
Describe
The role of the nervous system
Controls entire organism (and makes thought and memory possible)
Describe
The role of the reproductive system
Allows sexual reproduction to happen
Describe:
The role of the respiratory system
Helps the body absorb oxygen and release carbon dioxide
Identify this system
The respiratory system
