Introduction to the human body
What is homeostasis?
What is the body's ability to maintain a stable internal environment despite changes in the external environment.
Which plane divides the body into right and left sections?
Sagittal plane
: What is the primary function of the integumentary system?
Protection of the body, regulation of temperature, and sensory reception.
What is matter?
Matter is anything that occupies space and has mass
The anatomical position is standing upright, arms at sides, palms facing forward.
True
What is the definition of Anatomy?
What is the study of structure.
Which plane divides the body into front (anterior) and back (posterior) sections?
Frontal (coronal) plane
List two functions of the skeletal system.
Provides support, protects organs, stores minerals, produces blood cells, allows movement (with muscles).
In which three physical states does matter exist?
Solid, liquid, gas
The organ system level is simpler than the cellular level.
False (cellular is simpler)
What is the definition of Physiology?
What is the study of the function.
Which plane divides the body into upper (superior) and lower (inferior) sections?
Transverse (horizontal) plane
What are the three types of muscle tissue?
Skeletal, cardiac, and smooth muscle.
Define element, atom, and molecule.
Element: a substance that cannot be broken down into simpler substances by chemical means
Atom: the smallest unit of an element that retains its chemical properties
Molecule: two or more atoms chemically bonded together
The frontal plane divides the body into superior and inferior portions.
False (that’s the transverse plane)
Which body system transports oxygen and nutrients throughout the body?
What is The Circulatory ( Cardiovascular) system
What is the difference between a midsagittal and a parasagittal plane?
Midsagittal divides the body into equal right and left halves, while parasagittal divides it into unequal right and left portions.
What are the two main divisions of the nervous system?
Central nervous system (CNS) and peripheral nervous system (PNS).
What is a chemical bond, and what are the main types?
A chemical bond is a force that holds atoms together in molecules or compounds. Main types include ionic bonds, covalent bonds, and hydrogen bonds
A cation is a negatively charged ion.
False (cation = positive; anion = negative)
What are the six levels of organization in the body from simplest to complex?
Chemical level
Cellular level
Tissue level
Organ level
Organ system level
Organism level
If a surgeon makes an incision that divides the body into anterior and posterior halves, which plane is being used?
Frontal (coronal) plane
What is the function of red blood cells?
Transport oxygen and carbon dioxide.
What are electrolytes, and why are they important?
Electrolytes are minerals (ions) that carry an electrical charge (e.g. Na⁺, K⁺, Cl⁻). They are essential for nerve conduction, muscle contraction, and maintaining fluid balance
Water makes up more than half of the human body’s weight.
True