Anatomy Flashcards
The study of body structure
Anatomy
The study of the function of the body’s organs
Physiology
The relative consistency of the body’s internal enviornment
Homeostasis
What is the simplest level of the body’s structure?
Chemical
What are the simplest units of all matter?
Atoms
What are the 4 most common atoms in the human body?
Carbon, hydrogen, oxygen, and nitrogen
What is created when atoms bond together?
Molecules
What is created when molecules join together?
Organelles (cell parts)
What is created when organelles combine?
Cells
What is considered to be the smallest living units of the human body?
Cells
What is created when similar types of cells form together?
Tissues
What forms when 2 or more tissue types combine?
Organs
Organs arrange to form what?
Organ systems
Organ system arrange to form what?
Organism
What are the 4 tissue types in the body?
Epithelial, connective, muscle, and nervous
What type of tissue covers the body and most organs?
Epithelial
What are the 3 things lined by epithelial tissue?
Tubes, hollow organs, and body cavities
What cells make up glandular tissue?
Cells that make and secrete substances
What is the term for a gland that secretes its product into a duct?
Exocrine gland
What is the term for a gland that secretes its product into fluid or blood?
Endocrine gland
What does the term avascular mean?
Lacking blood vessels
What does the term mitotic mean?
Dividing constantly
Why is epithelial tissue mitotic?
To preserve structure during rapid growth
What are the 3 main functions of epithelial tissue?
Protection, absorption, and secretion
What is the most abundant tissue in the body?
Connective tissue
What separates the loosely packed cells of connective tissue?
A matrix
What cells are responsible for secreting collagen and making fibers?
Fibroblasts
What cells are responsible for secreting substances that promote inflammation (such as histamine) to damaged tissue?
Mast cells
What type of cells destroy unwanted material such as bacteria?
Macrophages
What are the 5 types of connective tissue?
Blood, bone, cartilage, dense, and adipose (fat)
What is the purpose of cartilage?
To give shape to structures
What makes up the discs between vertebrae?
Cartilage
What protects the ends of long bones?
Cartilage
What connects bone to bone?
Ligaments
What connects muscles to bones?
Tendons
Ligaments and tendons are what kind of connective tissue?
Dense
What type of connective tissue makes up the skins dermis and fills in damaged skin to create a scar?
Dense
What type of cells store fats?
Adipocytes
What type of connective tissue stores energy, cushions, and insulates?
Adipose
What is a type of tissue that contracts and relaxes?
Muscle
What are the 3 types of muscle tissue?
Skeletal, visceral (smooth), and cardiac
What type of tissue is striated, voluntary, and attached to the skeleton?
Skeletal
What type of muscle tissue is located in the walls of hollow organs, blood vessels, and the dermis?
VIsceral (smooth)
What type of muscle tissue is striated, involuntary, and in the heart?
Cardiac