Unit 3: Review Flashcards
What term describes the study of the chemistry and physics of the structure of the body and how these processes work together to form a living organism?
Anatomy and physiology
Ninety-nine percent of the human body is composed of these six types of ______ :
oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus
atoms
The structures of your body form a system that ranks items according to specific criteria that can be thought of like a ladder. What term BEST describes this system or ladder?
hierarchy
When thinking of the hierarchy of the structures of the body as a ladder, we know that the bottom rung is made up of atoms. The next step up the ladder is where many molecules group together to make the smallest unit of living matter called a cell. What is this level called?
cellular level
A cell is considered both a structure and a functional unit which means that the parts work together in what two ways?
Chemically and Physically
When examining an animal cell, what part controls the activity of the cell and can be thought of as the cell “brain”?
nucleus
What specific type of tissue acts as a pathway to allow communication between different regions of the body?
nervous tissue
Atoms that are chemically bound together are called:
molecules
On the hierarchy ladder of body systems, after the tissue rung the next rung is composed of structures made up of two or more types of tissue that perform a specific function of the body, like the heart, lungs, liver, brain, bladder, stomach, kidneys, and so on. What term BEST describes this rung on the ladder?
organs
The digestive system includes a group of organs working together to digest the food you eat and provide energy and nutrients to your body. What are several organs that are part of the digestive system and its processes?
Organ systems
What term refers to the top rung of the structural ladder?
Organism
What kind of tissue can be described as a membrane or skin that covers the outside of the body and the surfaces of organs within the body?
epithelial tissue
What do we call the smallest unit of living matter?
cells
What is one very helpful way that cells keep the right balance of molecules in order to function well and maintain homeostasis
the cell membrane selectively letting in or blocking substances from entering the cell
Physiology examines how the parts of the body work together to form a healthy, living, whole:
organism
What term refers to pathways that communicate the status and send signals to change the status if it is out of balance?
feedback loops
What term refers to the tendency towards a reasonably stable inner environment in a living organism?
Homeostasis
What three parts of the feedback loop are constantly working to keep the balance of all the different processes in your body?
Sensor, Control Center, Effector
Something that monitors a particular process to detect change such as nerve cells on the skin that feel temperature or chemical receptors that detect the amount of sugar in your blood can be referred to as:
sensor
What is the scientific word for how the body keeps checks on the temperature, done primarily through the skin, with sweating to release heat, widening or narrowing the blood vessels near the surface, or by insulating with the fat under the skin?
Thermoregulation
After sensors in the body detect a change, where do they send the signal so that the information can be compared to the normal range and change can be activated, if necessary?
control center
Ribosomes are structures that make:
protein
What process involves the movement of water through a membrane to make the concentration of water and minerals equal on both sides of the membrane?
Osmoregulation
Osmoregulation in the body involves expelling water, salts, and other minerals from the body to keep the concentrations in the body at the right measurements and is mostly done by what two organs?
kidneys and bladder
What force from outside the body influences movement by pulling everything and everybody down towards the center of the earth?
gravity
Start with a straight arm and bend it at the elbow so that your hand touches your shoulder, then, straighten your arm again. What three internal forces make this movement possible?
muscles,bones, and ligaments
What term refers to the study of the function and structure of movement of the body, specifically how the laws of mechanics apply?
Biomechanics