Unit 4: Preparation Flashcards
What is the function of the Digestive system? (2)
Breaks down food into chemical components that are small enough to enter circulation
Eliminates undigested food
What is the function of the Respiratory system? (3)
Delivers oxygen to blood
Removes CO2 from cells
Helps to control blood pH
What is the function of the Circulatory system? (3)
Transports blood, nutrients, gasses and metabolic wastes
Defends body against disease
Helps to control temperature, fluid balance, and pH balance
What are the function of the Lymphatic and Immune systems? (3)
Help to control fluid balance
Defend against disease
Absorb fats
What is the function of the Excretory system? (3)
Removes metabolic waste
Helps to control fluid balance
Helps to control pH balance
What is the muscular system? (3)
Maintains posture
Moves body and organs
Produces heat
What is the function of the integumentary system? (4)
Protects body from infection
Receives sensory input
Controls body temperature
Synthesizes vitamin D
What is the function of the Skeletal system? (4)
Provides framework for muscles to attach, making movement possible
Produces blood cells
Stores minerals
Protects soft organs
What is the function of the Nervous system? (2)
Detects, interprets, and responds to stimuli from outside and within body
With endocrine system, coordinates all organ-system functions
What is the function of the Endocrine system? (5)
Produces hormones Helps to coordinate organ systems Respond to stress Helps to regulate fluid and pH balance Helps to regulate metabolism
What is the function of the Reproductive system? (4)
Produces gametes
Transports gametes
Produces sex hormones
Gives birth to offspring
What are the organ systems studied in this course?
Digestive Respiratory Circulatory Lymphatic and immune Excretory Muscular
What is average body temp?
37 degrees
What is normal blood pH?
7.4
What is normal blood glucose?
100mg/mL
What is homeostasis?
The tendency of the body to maintain a constant internal environment
How do body systems maintain homeostasis?
Sensor
Effector
Control Center
How does Sensor affect homeostasis?
Detects a change in internal environment
How does Effector affect homeostasis?
Brings internal conditions back into normal range
How does Control Center affect homeostasis?
Activates the effector based on information received by the sensor
How does data travel to create homeostasis?
A Sensor detects a change and signals the Control center. The Control center activates the effector which reverses the changes
