Week 1 Flashcards
What is anatomy?
The scientific study of biological structure (structure of living things)
What is physiology?
Scientific study of biological functions (how living things work)
What are atoms?
Building blocks of everything
Held together by chemical bonds forming molecules
Smallest unit of matter that can enter a chemical reaction
What are cells?
Basic building blocks of a loving thing
Smallest things that are alive
Organelle inside the cells
What is tissue?
Group of cells working together to perform a particular function
What is an organ?
Consists of 2 or more types of tissue that has a particular function
Ex: heart
What is an organ system?
Groups of organs that perform a particular function
Ex: digestive system
What is an organism?
The living creature itself
What are the different organ systems?
Integumentary Skeletal Muscular Nervous Cardiovascular Respiratory Digestive Endocrine Lymphatic Urinary Reproductive
What is the integumentary system?
Skin, nails and hair
What is the skeletal system?
Bones and cartilage that give your body framework, protection and structure
What is the muscular system?
The muscles of the body attached to skeleton and give conscious movements
What is the nervous system?
Brain, spinal cord and nervous
One of the two major coordination systems of the body
What is the cardiovascular system?
Heart and blood vessels
Primary transportation of the body
Brings O2 to the tissues and takes CO2 away
What is the respiratory system?
Lungs and pipe work
Gas exchange
O2 in CO2 out through blood stream
What is the digestive system?
Breaks down food and absorbs nutrients
What is the endocrine system?
Major coordinating system
System of glands
Secrete hormones into the blood
What are hormones?
Chemical messengers
Message giving an instruction
What is the lymphatic system?
Parallel circulatory system
Carry lymph NOT blood
Much of the immune system resides here
What is the urinary system?
Kidneys etc
Produces urine
Removes waste from blood, keeps water levels at proper balance and regulates salt concentrations
What is the reproductive system?
Reproduce offspring
What is homeostasis?
Maintenance of a relatively stable internal environment
What is the homeostasis mechanism?
The mechanisms to maintain homeostasis
What are the 3 things all mechanisms of homeostasis?
Receptors
Control center
Effectors
What are receptors?
Sensors built in the body that measure everything
Ex: body temp, O2 levels, etc
What is the control center?
The brain or spinal cord
Doesn’t involve conscious thinking
Involves a set point and if the set point doesn’t match the control center they send messages to the effectors to fix the problem
The control center always compares info given by the receptors
What is a set point in the control center?
Ideal number something needs to be