A & P review p1 Flashcards
All chapters except muscles. Muscles are a separate deck.
Define physiology.
Function of human body.
Define anatomy.
Structure of human body
What is the complementarity of structure & function?
They are inseparable bc function always reflects structure.
Name the levels of structural organization.
Chemical level (atoms, molecules, organelles)
Cellular level
Tissue level
Organ level
Organ System Level
Organism Level
How many organ systems are there?
11
Name all organ systems.
Integumentary
Skeletal
Muscular
Nervous
Endocrine
Cardiovascular
Respiratory
Excretory/Urinary
Digestive
Reproductive
Lymphatic/Immune
Name 3 things metabolism includes.
Catabolism (breaking down things)
Anabolism (building things)
Cellular respiration (using nutrients & O2 to make ATP)
Name the 8 characteristics of life.
Maintain boundaries (skin, cell membranes)
Movement (muscles, fluids through organs)
Responsiveness/Irritability (muscle reflex to stimuli, CO2 low=rapid breathing response)
Digestion
Metabolism
Excretion (digestion, urinary, respiratory)
Reproduction (cells, organisms)
Growth (body part, cells, organism)
What body systems does metabolism depend on?
Digestive & respiratory to provide nutrients & O2 to blood
Cardiovascular to distribute nutrients & O2 throughout body
What regulates metabolism?
Hormones secreted by endocrine glands
Name the 5 survival needs.
Nutrients
Oxygen
Water
Temperature
Pressure
Define homeostasis.
Body’s ability to maintain relatively stable internal conditions
Define variable.
Factor or event being regulated.
Name the 3 components that work together in the homeostatic control mechanism.
Receptor
Control center
Effector
What does the control center do?
Determines “set point” (range @ which variable is to be maintained)
Analyzes input & determines appropriate response
Sends output to effector via efferent pathway
What is some type of sensor monitoring the environment that responds to stimuli by sending input to control center via afferent pathway?
receptor
Name types of feedback.
Positive feedback
Negative feedback
What is negative feedback?
When affect of stimuli is reduced so control process is shut off completely.
What does an effector do?
Provides the means for control center’s output to stimulus
Sends feedback to influence the effect of stimuli (either reducing or enhancing it)
Describe positive feedback.
When affects if stimuli are enhanced so control process continues at faster rate
Name axial body cavities
Dorsal
Ventral
Other
Ventral cavity includes what?
Thoracic
Abdominopelvic
What cavities are in thoracic cavity?
Mediastinum
Pleural cavities
Dorsal cavity contains which cavities?
Cranial cavity
Vertebral/Spinal Cavity
Name “other” body cavities.
Oral
Nasal
Orbital
Middle ear
Synovial
Frontal sinuses
Sphenoidal sinus (behind eye)
Define serous or serosa.
Membranes
Define parietal serosa.
Lines cavity walls
Define visceral serosa.
Covers organs in a cavity
Define serous fluid.
Thin layer of lubricating fluid separating parietal and visceral serosa.
Where is serous fluid found?
In the cavity between visceral & parietal membranes
Term for lung membranes.
Pleural membranes
Term for cardiac membranes.
Pericardial membranes (pericardium)
Term for abdominopelvic membranes.
Peritoneal membranes
Name the pleural membranes.
Visceral pleura
Parietal pleura
Name pericardial membranes
Parietal pericardium
Visceral pericardium
Fibrous pericardium
Name peritoneal membranes
Parietal peritoneum
Visceral peritoneum
What is the peritoneal cavity?
Cavity between parietal & visceral peritoneums
Define matter.
Anything that has mass and takes up space
Name 2 types of energy
Kinetic
Potential
Name the cellular form of energy needed for all life.
ATP
Where is ATP made?
Mitochondria
ATP is a product of what?
Cellular respiration
Name 4 most common elements.
Carbon
Hydrogen
Oxygen
Nitrogen
What are neutral atoms?
Atoms with same number of protons & neutrons
Define isotope
Atom with same # of protons but different # of neutrons
What types of radiation do isotopes put off?
Alpha waves
Beta waves
Gamma rays
The larger amount of a mixture is called what?
Solvent
What is the smaller amount of a mixture?
Solute
What are valence electrons?
Electrons in outermost shell (valence shell)
Define ion.
Charged atom
Cations have what kind of charge?
Positive
Anions have what type of charge?
Negative
Is oxidation a gain or loss if electrons?
Loss of electrons
Is reduction a gain or loss of electrons?
Gain of electrons.
What is the strongest bond?
Covalent bond
What are 2 types of covalent bonds?
Polar
Non polar
What is the weakest bond?
Hydrogen
What numbers are acids on pH scale?
0-7
What numbers are bases on the pH scale?
7-14
What do acids do when put in water?
Release hydrogen atoms
What do bases do when put in water?
Release hydroxide ions (OH-)
What do neutrals on the pH scale do when put in water?
Gain and release the same amount of hydrogen and hydroxide ions
What is the pH of blood?
7.4 (7.35-7.45)
What does a buffer do?
Helps maintain pH by either picking up or dropping hydrogen ions
What do salts/electrolytes do in the body?
Conduct currents and release ions in water
What are the two most important salts/electrolytes?
Sodium
potassium
What is alkalosis?
Body pH of 7.5 to 7.8
What is acidosis?
Body pH of 7.0 to 7.3
Name the inorganic substances in our body.
Water
oxygen
carbon dioxide
salts/electrolytes
What is the most abundant inorganic substance in the human body?
Water
Name the organic substances of the body.
Carbohydrates
Proteins
Lipids
Nucleic acids
Another name for carbohydrates?
Sugars
What is the chemical make-up of all sugars?
C6 H12 06
What is the most abundant monosaccharide in the body?
Glucose
What is the part of the plant cell wall that we cannot digest?
Cellulose
Human form of sugar when it is stored?
Glycogen
What is the storage form of sugar in plants?
Starch
Dehydration synthesis is used to combine what?
Monomers into polymers
What is hydrolysis used for?
Splitting polymers into monomers by adding a water molecule
Name types of lipids.
Triglycerides
steroids
phospholipids
What are the two kinds of triglycerides?
Saturated fats
Unsaturated fats
What is the most important steroid in the body?
Cholesterol
What are steroids used for?
Making vitamin D
Steroid hormones
Sex hormones
Bile salts
What is the main component of a cell membrane?
Phospholipids
Lipids help the body to use which vitamins?
A, D, E and K
What is the most diverse group of organic compounds?
Proteins
Proteins are made up of what?
Amino acids
Name several kinds of proteins in the body.
Antibodies
Enzymes
Hemoglobin
What do enzymes do?
Help out in every reaction in the body
Act as catalysts (increasing or speeding up reactions)
What does hemoglobin do?
Transports oxygen
Where is hemoglobin located?
On red blood cells
What does insulin do?
Regulates blood sugar
What was the first genetically engineered product?
Human insulin
Name two nucleic acids.
DNA
RNA
Nucleic acids are made up of what?
Nucleotides
What is a nucleotide made up of?
A five carbon sugar
A phosphate group
A nitrogenous base
What are the four bases of DNA?
Adenine
Thymine
Guanine
Cytosine
DNA has how many strands?
2
What are the four bases of RNA?
Adenine
Uracil
Guanine
Cytosine
How many strands does RNA have?
1
What is the primary energy transferring molecule in cells?
ATP
What provides a form of energy that is immediately usable by all cells of the body?
ATP
How many times can a light microscope magnify?
1000 times
Which microscope allows objects to be seen in 3-D?
Scanning electron microscope
Which microscope allows 100,000 to 200,000 times magnification but no 3-D imaging?
Transmission electron microscope
Which microscope allows us to only see the cell membrane, cytoplasm, and the cell nucleus?
Light microscope
Name the parts of a cell.
Nucleus
Ribosomes
Endoplasmic reticulum
Mitochondria
Golgi apparatus
Lysosomes
Cilia and flagella
What do ribosomes do?
Make proteins
Make DNA and RNA
Where are ribosomes located?
On the endoplasmic reticulum
What is the end of endoplasmic reticulum responsible for?
Transport
What are the two types of endoplasmic reticulum?
Rough
Smooth
What is the rough endoplasmic reticulum responsible for?
Protein synthesis
What is the smooth endoplasmic reticulum responsible for?
Making lipids
Detox
Which organelle is responsible for ATP synthesis through cellular respiration?
Mitochondria
What organelle packages and sorts material?
Golgi apparatus
What do lysosomes contain?
Digestive enzymes
What are cilia?
Short, hair-like projections
What are flagella?
Long, whip-like tales
Where are flagella in the human body?
Only on sperm cells
The nucleus sends messenger RNA (mRNA) to which organelle?
Endoplasmic reticulum
What does the golgi apparatus do with the items it is sent?
Sorts, packages it and sends it out
The endoplasmic reticulum sends the object that is made to which organelle
golgi apparatus
What are the components of the cell membrane?
Phospholipids
Proteins
Name the types of passive transport.
Diffusion
Facilitated diffusion
Osmosis
Filtration
Is energy required for passive transport?
No
Describe an isotonic solution.
One which has the same solute to water concentration as inside of the cells.
What happens to cells in an isotonic solution?
They retain their shape
What happens to cells in a hypotonic solution?
They take on water by osmosis until they burst
Describe a hypotonic solution.
One that contains a lower concentration of solutes than are present in cells
Describe a hypertonic solution.
One which contains a higher concentration of solutes than are present inside cells
Describe what happens to a cell in a hypertonic solution.
Cells lose water by osmosis and shrink
What is the movement of molecules caused by mechanical force such as blood pressure?
Filtration
What is the diffusion of a solvent through a selectively permeable membrane?
Osmosis
What helps a molecule pass through the lipid bilayer in facilitated diffusion?
A Protein
Does active transport require ATP?
Yes
Describe what happens in active transport.
Molecules move against the concentration gradient or flow
Name the types of active transport.
Endocytosis
Exocytosis
What are two examples of endocytosis?
Phagocytosis
Pinocytosis
Phagocytosis is described as what?
Cellular eating