Levels of organization of the human body
The structures for this level of organization possess the essential characteristics of living matter, being the smallest and most abundant units of the body that are considered alive
Cellular level
What is anatomy?
The branch of medicine that focuses on studying the structures of the human body, as well as the relationships that exist between them
What is physiology?
The scientific discipline that studies the functions of living organisms and their components
What does the term homeostasis refer to?
The balance that is achieved through a number of control mechanisms to keep the body alive
At this level, each component fulfills a specific and essential purpose for the correct functioning and survival of the cell
Organelle level
What is the purpose of the anatomical position in studying the human body?
It facilitates the description of body parts and regions, allowing a more precise analysis of the structures that make them up
How is physiology classified according to the type of organism?
This type of homeostatic feedback system opposes change by a response contrary to the direction of the initial alteration. They stabilize physiological variables by acting as inhibitors.
Negative feedback sytem
What macromolecules belong to the chemical level of body organization?
Proteins, carbohydrates, lipids, and nucleic acids
How does the sagittal plane divide the human body?
Left and right portions
How is physiology classified according to the level of organization studied?
Molecular physiology, cellular physiology, etc.
This type of homeostatic feedback system does not favor the maintenance of a stable state. They amplify the change that is taking place by acting as stimulators.
Positive feedback system
It is a collection of numerous cells that share structural characteristics and perform similar functions
Tissue
How does the transverse plane divide the human body?
Upper and lower portions
Give examples of how physiology is classified according to the specific or systemic function being analyzed
Respiratory physiology, cardiovascular physiology, etc.
What type of signals does the body use to self-regulate?
Nerve impulses and hormones
This level represents the whole set of structures and systems that interact with each other with extraordinary coordination, allowing it to maintain internal equilibrium, adapt to the environment, and survive
Organism level
How does the coronal plane divide the human body?
Anterior and posterior portions
How are physiology and anatomy connected?
The structures analyzed by anatomy also perform functions, which is what physiology focuses on
During childbirth, oxytocin stimulates increasingly strong contractions to push the baby through the birth canal.