1.4 Organisation of multicellular organisms (Ppt) Flashcards
What are the basic building blocks of multicellular organisms?
Cells
Cells are massed together to form tissues.
What is formed when one or more tissues work together?
Organs
Organs perform specific functions.
What do organ systems consist of?
One or more organs
Organ systems carry out specific functions together.
How are the structure and function of tissues related?
The specific structure of cells determines the function of the tissue.
What are the four main tissues in an animal organism?
Four main categories:
* Epithelial Tissue
* Connective Tissue
* Muscle Tissue
* Nervous Tissue
What is the primary function of epithelial tissue?
To cover the outside of the body and line internal organs and tracts.
What is the main role of connective tissue?
To bind and support other tissues.
What types of muscle tissue exist?
Three types:
* Skeletal Muscle
* Smooth Muscle
* Cardiac Muscle
Where is skeletal muscle found and what is its function?
Attached to bones by tendons, responsible for voluntary movements.
What characterizes smooth muscle?
Found in internal organs, contracts involuntarily.
What is the function of cardiac muscle?
Contracts rhythmically to produce the heartbeat.
What is the functional unit of nervous tissue?
Neuron (nerve cell).
How is the structure of an organ related to its function?
The structure is designed to facilitate its specific function.
What tissues are involved in the stomach’s function?
Epithelial, connective, and smooth muscle tissues.
What is an organ system?
A group of organs working together to perform a specific function.
True or False: Organ systems work in isolation.
False
Organ systems are interdependent.
What lifestyle choices can affect organ function and health?
Nutrition, exercise, and drug use.
What are some benefits of following a balanced diet?
Provides essential nutrients, reduces risk of diseases.
What are potential downsides of taking prescription medications?
Side effects and dependency.
How can moderate alcohol consumption affect well-being?
Can reduce stress but excessive consumption leads to health risks.
What is a key idea about the organization of multicellular organisms?
Cells form tissues, tissues make up organs, and organs form organ systems.
What can excessive exercise lead to?
Muscle soreness, increased risk of injury, and fatigue.
How is muscle tissue arranged?
In parallel within the cytoplasm
What does muscle tissue contain?
A large number of microfilaments. Microfilaments are made of contractile proteins (actin and myosin)
