ANATOMY SPRING FINAL EXAM (this does not include endocrine info) Flashcards
(457 cards)
Know the order of the levels of organization of the human body smallest to largest:
atoms, molecules, macromolecules, organelles, CELLS, tissues, organs, organ system, organism
What is the smallest structure in the human body?
atom
What is the largest structure in the human body?
organism (the whole organism)
the study of the structures and functions of the human body
human anatomy and physiology
small structures within a cell that carry out specific functions to keep the cell in homeostasis
organelles
the basic unit of structure and function of the human body
cell
groups of cells similar in structure and function
tissues
a structure composed of two or more types of tissues that has a specialized functions
organ
the sum of all the chemical reactions that take place in the body at a given point in time
metabolism
having a stable internal environment
homeostasis
aims to maintain stability by countering a change
negative feedback mechanism
amplifies change, often leading to instability
positive feedback mechanism
an internal fluid between cells that contains water, nutrients, and oxygen
extracellular fluid (intercellular fluid)
a structure that causes a response which alters conditions in the internal environment
effector
open spaces in the human body
body cavity
Body cavities usually contain _____________.
organs
2 main body cavities
dorsal
ventral
2 subdivisions of Dorsal cavity
cranial
vertebral
where is the cranial cavity found
within the skull
where is the vertebral cavity found
spinal canal
what organs are in the cranial cavity?
brain, pituitary gland, hypothalamus
what organs are in the vertebral cavity?
spinal cord
how many structures are in the vertebral cavity?
1
how many structures are in the cranial cavity?
3