Lecture 1 Flashcards
(22 cards)
Physiology
Study of functions and processes of a living organisms and its component parts
Study of functions and processes of a living organisms and its component parts
Physiology
Smallest structure capable of life
Cell
Cell
Smallest structure capable of life
Collection of specialized cells with unified function
Tissues
What is physiology?
The study of body functions.
What are the two processes used to explain body functions?
- Teleological
- Mechanistic
Define teleological explanations in physiology.
Explanations in terms of meeting a bodily need.
Define mechanistic explanations in physiology.
Explanations in terms of cause and effect sequences.
What is homeostasis?
A core concept of human physiology essential for survival.
List the core concepts of physiology.
- Homeostasis
- Cell-cell communication
- Flow down gradients
- Cell Membranes
- Mass Balance
What does ‘flow down gradients’ refer to?
The movement of substances from areas of higher concentration to lower concentration.
What are the levels of study in physiology?
- Chemical level
- Cellular level
- Tissue level
- Organ level
- Body system level
- Organism level
Name the components of the digestive system.
- Mouth
- Pharynx
- Esophagus
- Stomach
- Small intestine
- Large intestine
- Salivary glands
- Exocrine pancreas
- Liver
- Gallbladder
What systems make up the human body?
- Circulatory system
- Respiratory system
- Urinary system
- Skeletal system
- Muscular system
- Integumentary system
- Immune system
- Nervous system
- Endocrine system
- Reproductive system
What role do cells play in homeostasis?
Cells make up body systems that maintain homeostasis.
What is a common misconception about homeostasis?
Homeostasis is ‘on or off’.
What is the role of sensors in the homeostasis feedback loop?
Detect deviations in controlled variables.
What does the integrator do in the homeostasis feedback loop?
Sends instructions based on the information from sensors.
What is the function of effectors in the homeostasis feedback loop?
Brings about responses that restore controlled variables to normal.
True or False: Set points in homeostasis never change.
False
Homeostasis order
Sensor, Integrator, Effector
