Cells, Tissues, & Organs
What is the smallest structural unit of the human body?
The Cell
What anatomical term means "toward the midline of the body"?
Medial
What is circulation?
The continuous one-way movement of blood throughout the body.
How many chambers does the heart have?
Four
What type of vessel carries blood away from the heart?
Arteries
Groups of specialized cells that work together to perform a specific job are called what?
Tissues
What are the four abdominal quadrants used by healthcare workers?
RUQ, LUQ, RLQ, LLQ
What do arteries deliver to cells?
Oxygen and nutrients
What chamber receives unoxygenated blood from the body?
The right atrium
What are the smallest blood vessels where gas exchange occurs?
Capillaries
What is the definition of an organ?
A body structure made of multiple tissues working together to perform specific functions
What term means “toward the head”?
Cranial
What happens if circulation is inadequate?
Cells die → tissues die → organs stop functioning
Which heart valve lies between the left atrium and left ventricle?
The mitral (bicuspid) valve
What vessel carries blood back toward the heart?
Veins
What term describes a change in the normal structure or function of the body?
Disease
Which term means “farther away from the point of attachment”?
Distal
Which vessel carries unoxygenated blood from the heart to the lungs?
The pulmonary artery
What is the thick muscular layer of the heart called?
Myocardium
What is an arteriole?
A small artery that connects larger arteries to capillaries.
Place these in order from smallest to largest: Tissues, Systems, Organs, and Cells.
Cells → Tissues → Organs → Systems
What is the anatomical position? Please demonstrate, and why is it important?
The standard reference position for describing body parts and directions ensures uniform anatomical terminology.
What waste product do veins carry away from cells?
Carbon dioxide
Which chamber pumps oxygenated blood into the aorta?
The left ventricle
What are venules?
Small veins that connect capillaries to larger veins.