Week 1: PNA 100 COMPLETE QUESTIONS AND ACCURATE
DETAILED ANSWERS \VERIFIED 100% \LATEST UPDATE
Anatomy Is the science of structure and the relationships among structures.
Physiology Is the science of body functions, that is, how the body parts work.
Organismal level All of the systems of the body combine to make up an organism
1. Metabolism
2. Responsiveness
3. Movement
6 important life processes of
4. Growth
humans:
5. Differentiation
6. Reproduction
Metabolism The sum of all the chemical processes that occur in the body.
Responsiveness The body's ability to detect and respond to changes in its
environment.
Includes motion of the whole body, individual organs,
Movement
single cells, and even tiny organelles inside cells.
an increase in body size that results from an increase in
Growth
the size of existing cells, an increase in the number of
cells, or both
Differentiation the process whereby unspecialized cells become specialized cells
Is the formation of new cells for growth, repair, or
Reproduction
replacement or the production of a new individual.
The maintenance of relatively stable conditions. This
Homeostasis
ensures the body's internal environment remains
constant despite the changes inside and outside the
body.
What 2 systems is the body The nervous system and the endocrine system
mainly under control of?
detects changes from the balanced state and sends
Nervous system (homeostasis)
messages in the form of nerve impulses to organs that
can counteract the change
, Endocrine system Corrects changes by secreting molecules called hormones into
(homeostasis) the blood
How is homeostasis By means of feedback systems
maintained?
A cycle of events in which a condition in the body is
Feedback system (loop)
continually monitored, evaluated, changed,
remonitored, or reevaluated.
3 Basic components of Receptor, control centre and an effector
Feedback system:
Negative feedback systems Reverses a change in a controlled condition. Eg. Blood pressure
regulation
1. Chemical Level
2. Cellular Level
3. Tissue Level
Organization of the Human 4. Organ Level
Body
5. System Level
6. Organismal Level
1. Chemical level includes: Atoms & Molecules
Atoms are: The smallest units of matter that participate in chemical
reactions.
Molecules are: 2 or more atoms joined together
Cells The basic structural and functional units of an organism.
Type of cells in the human Muscle cells, nerve cells and blood cells
body (3)
Tissues Are groups of cells and the materials surrounding them that
work together to perform a particular function.
DETAILED ANSWERS \VERIFIED 100% \LATEST UPDATE
Anatomy Is the science of structure and the relationships among structures.
Physiology Is the science of body functions, that is, how the body parts work.
Organismal level All of the systems of the body combine to make up an organism
1. Metabolism
2. Responsiveness
3. Movement
6 important life processes of
4. Growth
humans:
5. Differentiation
6. Reproduction
Metabolism The sum of all the chemical processes that occur in the body.
Responsiveness The body's ability to detect and respond to changes in its
environment.
Includes motion of the whole body, individual organs,
Movement
single cells, and even tiny organelles inside cells.
an increase in body size that results from an increase in
Growth
the size of existing cells, an increase in the number of
cells, or both
Differentiation the process whereby unspecialized cells become specialized cells
Is the formation of new cells for growth, repair, or
Reproduction
replacement or the production of a new individual.
The maintenance of relatively stable conditions. This
Homeostasis
ensures the body's internal environment remains
constant despite the changes inside and outside the
body.
What 2 systems is the body The nervous system and the endocrine system
mainly under control of?
detects changes from the balanced state and sends
Nervous system (homeostasis)
messages in the form of nerve impulses to organs that
can counteract the change
, Endocrine system Corrects changes by secreting molecules called hormones into
(homeostasis) the blood
How is homeostasis By means of feedback systems
maintained?
A cycle of events in which a condition in the body is
Feedback system (loop)
continually monitored, evaluated, changed,
remonitored, or reevaluated.
3 Basic components of Receptor, control centre and an effector
Feedback system:
Negative feedback systems Reverses a change in a controlled condition. Eg. Blood pressure
regulation
1. Chemical Level
2. Cellular Level
3. Tissue Level
Organization of the Human 4. Organ Level
Body
5. System Level
6. Organismal Level
1. Chemical level includes: Atoms & Molecules
Atoms are: The smallest units of matter that participate in chemical
reactions.
Molecules are: 2 or more atoms joined together
Cells The basic structural and functional units of an organism.
Type of cells in the human Muscle cells, nerve cells and blood cells
body (3)
Tissues Are groups of cells and the materials surrounding them that
work together to perform a particular function.
