HESI ANATOMY AND PHYSIOLOGY--QUIZ ALLQUESTIONS AND
DETAILED ANSWERS TOP RATED VERSION FOR 2025-2026 ALREADY A
GRADED BRAND NEW!!!
homeostasis
body's maintenance of a stable environment
receptors
molecule or cell that provides information about the environment
control center (and set point)
indicates correct value (e.g. body temp)
effectors
What elicits a response that alters conditions within the body's internal
environment. (e.g. muscles and glands)
negative feedback
When receptors measure deviations from the set point, effectors are
activated and conditions are returned toward the set point and
effectors gradually shut off. This movement toward homeostasis and
balance is called .........
positive feedback
Homeostatic mechanisms that function when changes byeffectors move
the body away from normal conditions, causing more changes, is
called...... (examples are blood clotting and labor contractions)
organelles, cells, tissues, organs, organ systems, organism
Levels of organization
,organelle
Cell components that perform a specific function
cells
Basic unit of structure and function
tissues
Groups of cells organized into layers or masses that have specific
functions
organs
Structures that perform a specialized function (comprised of tissues)
Organ systems
Groups of organs that function together closely
Organism
Comprised of an interacting organ system
superior
above, or closer to the head
inferior
below, or closer to the feet
Anterior (Ventral)
Toward the front
Posterior (Dorsal)
Toward the back
,medial
Toward the midline
lateral
Away from the midline (closer to the sides)
Median (saggital) plane
Imaginary vertical line dividing the body into right and left portions
Coronal/Frontal plane
Imaginary vertical line dividing the body into anterior and posterior
portions
Transverse (cross-sectional)
Imaginary horizontal line dividing the body into superior and inferior
Dorsal cavities (near the back)
Cranial and spinal cavity
Cranial cavity
Cavity that contains the brain
Spinal cavity (vertebral)
Cavity that contains the spinal cord and vertebrae
orbits, nasal, oral, thoracic, mediastinum, pericardial, pleural, and
abdominopelvic (peritoneal)
Ventral cavities (near the front of the body)
orbits
, Cavity that contains the eyes and associated skeletal muscles and
nerves
Nasal cavity
Cavity that is divided into right and left portions by the nasal septum;
air-filled sphenoid and frontal sinuses
Oral cavity
Cavity that contains the teeth and tongue
thoracic cavity
Cavity that contains the lungs (chest cavity)
Mediastinum
Space between the lungs that contains the heart, esophagus, trachea,
and thymus
Pericardial cavity
Potential space between the visceral pericardium and the parietal
pericardium
middle ear cavities
Cavity containing the incus, malleus, stapes
Pleural cavities (lungs)
Cavities (right and left) that are the potential space between the
parietal and visceral pleural membranes
Abdominopelvic cavity
DETAILED ANSWERS TOP RATED VERSION FOR 2025-2026 ALREADY A
GRADED BRAND NEW!!!
homeostasis
body's maintenance of a stable environment
receptors
molecule or cell that provides information about the environment
control center (and set point)
indicates correct value (e.g. body temp)
effectors
What elicits a response that alters conditions within the body's internal
environment. (e.g. muscles and glands)
negative feedback
When receptors measure deviations from the set point, effectors are
activated and conditions are returned toward the set point and
effectors gradually shut off. This movement toward homeostasis and
balance is called .........
positive feedback
Homeostatic mechanisms that function when changes byeffectors move
the body away from normal conditions, causing more changes, is
called...... (examples are blood clotting and labor contractions)
organelles, cells, tissues, organs, organ systems, organism
Levels of organization
,organelle
Cell components that perform a specific function
cells
Basic unit of structure and function
tissues
Groups of cells organized into layers or masses that have specific
functions
organs
Structures that perform a specialized function (comprised of tissues)
Organ systems
Groups of organs that function together closely
Organism
Comprised of an interacting organ system
superior
above, or closer to the head
inferior
below, or closer to the feet
Anterior (Ventral)
Toward the front
Posterior (Dorsal)
Toward the back
,medial
Toward the midline
lateral
Away from the midline (closer to the sides)
Median (saggital) plane
Imaginary vertical line dividing the body into right and left portions
Coronal/Frontal plane
Imaginary vertical line dividing the body into anterior and posterior
portions
Transverse (cross-sectional)
Imaginary horizontal line dividing the body into superior and inferior
Dorsal cavities (near the back)
Cranial and spinal cavity
Cranial cavity
Cavity that contains the brain
Spinal cavity (vertebral)
Cavity that contains the spinal cord and vertebrae
orbits, nasal, oral, thoracic, mediastinum, pericardial, pleural, and
abdominopelvic (peritoneal)
Ventral cavities (near the front of the body)
orbits
, Cavity that contains the eyes and associated skeletal muscles and
nerves
Nasal cavity
Cavity that is divided into right and left portions by the nasal septum;
air-filled sphenoid and frontal sinuses
Oral cavity
Cavity that contains the teeth and tongue
thoracic cavity
Cavity that contains the lungs (chest cavity)
Mediastinum
Space between the lungs that contains the heart, esophagus, trachea,
and thymus
Pericardial cavity
Potential space between the visceral pericardium and the parietal
pericardium
middle ear cavities
Cavity containing the incus, malleus, stapes
Pleural cavities (lungs)
Cavities (right and left) that are the potential space between the
parietal and visceral pleural membranes
Abdominopelvic cavity
