Lecture 1 Flashcards
What percentage of tissue in the human body is epithelial tissue?
3%
What are the functions of epithelial tissue?
Covers exposed surfaces, lines internal passageways and chambers, forms secretory glands, provides physical protection, controls permeability, provides sensation, and produces specialized secretions.
What structures are included in epithelial tissue?
Epithelia and glands (exocrine and endocrine).
What percentage of tissue in the human body is connective tissue?
45%
What are the functions of connective tissue?
Fills internal spaces, provides structural support, stores energy, establishes a structural framework for the body, transports fluids and dissolved materials, protects delicate organs, supports, surrounds, and interconnects other types of tissues, stores energy (especially in the form of triglycerides), and defends the body from invading microorganisms.
What types of connective tissue are there?
Connective tissue proper (loose: areolar, adipose, reticular; dense: dense regular, dense irregular, elastic), fluid connective tissue (blood and lymph), and supporting connective tissues (cartilage: hyaline, elastic, fibrocartilage; bone).
What percentage of tissue in the human body is muscle tissue?
50%
What is the primary function of muscle tissue?
Contracts to produce movement.
What are the three types of muscle tissue?
Skeletal muscle, cardiac muscle, and smooth muscle.
What percentage of tissue in the human body is nervous tissue?
2%
What are the functions of nervous tissue?
Conducts electrical impulses and carries information.
How do atoms, molecules, cells, and tissues relate to each other?
Atoms combine to form molecules, which interact to form cells that can secrete and regulate. These cells and extracellular materials and fluids combine to form tissues.
Which tissue includes blood and lymph?
Connective tissue.
Which tissue forms glands?
Epithelial tissue.
Which tissue allows information to be quickly sent around the body?
Nervous tissue.
