LO 1 Flashcards
Define: Anatomy
The relationship of body parts to each other
Define: Gross Anatomy
Concerned with body structures visible to the naked eye
Heart, lungs, skin, etc.
Define: Microscopic Anatomy
Concerned with body structures that can only be seen with the aid of a microscope
(Blood cells)
Define: Physiology
Functions of body parts, How things work
Define: Chemical level
- Simplest level of organization
Atoms such as Carbon, Hydrogen, Oxygen and Nitrogen combine to form molecules
Define: Cellular level
- Second simplest level
Molecules combine to form structural components of individual cells (muscle cells, brain cells and blood cells)
Define: Tissue level
- Third simplest level
Groups of similar cells make up tissue
ex. brain cells make brain tissue
What are the 4 types of tissues?
1) Epithelial tissue
2) Connective tissue
3) Muscle tissue
4) Nervous tissue
Define: Organ level
- Third highest level
Combination of at least two types of tissue in a structure, called an organ, which performs a specific function
Define: System level
- Second highest level
Combination of several related organs that have a common function
Define: Organism level
- Highest level or organization
All systems together to make the total living body
List the levels of structural organization from the most complex, to the simplest
Organism level, System level, Organ level, Tissue level, Cell level, Chemical level
1) Gross Anatomy 2) Microscopic anatomy 3) Physiology
Which one matches the following statement?
-The lateral surface of the kidney is convex
Gross Anatomy
1) Gross Anatomy 2) Microscopic anatomy 3) Physiology
Which one matches the following statement?
- Cells of kidneys
Microscopic anatomy
1) Gross Anatomy 2) Microscopic anatomy 3) Physiology
Which one matches the following statement?
- Urine formation begins with glomerular filtration
Physiology
1) Gross Anatomy 2) Microscopic anatomy 3) Physiology
Which one matches the following statement?
- The more pointed end of the heart is called the apex
Gross Anatomy
1) Gross Anatomy 2) Microscopic anatomy 3) Physiology
Which one matches the following statement?
- Contraction of the heart is triggered by action potential
Physiology
1) Gross Anatomy 2) Microscopic anatomy 3) Physiology
Which one matches the following statement?
- Mature red blood cells do not contain a nucleus
Microscopic anatomy
Describe: Skeletal System
- Bones, cartilage, ligaments, tendons, and joints
- Provides protection, support, movement, site of blood production, and storage of minerals ( Ca & Phosphorus)
Describe: Nervous system
- Brain, spinal cord, nerves, sense organs
- Electrical regulation of body activities
Describe: Endocrine system
- Hormone-producing glands and cells
- Hypothalamus, pituitary, thyroid, parathyroid, adrenal, and pineal glands
- Chemical regulation of body activities
What are the two types of systems that regulate body activities?
1) The nervous system (electrical regulation)
2) The endocrine system (chemical regulation)
Describe: Muscular system
- Skeletal muscle, cardiac muscle, smooth muscle
- Movement, posture, heat production
Describe: Integumentary system
- Skin, hair, nails, sweat and oil glands
- Protection, eliminates some body waste, regulates temperature, involved in vitamin D production, pain receptors
Describe: Cardiovascular system
- Heart, blood vessels and blood
- Carries oxygen and nutrients to tissues, carries CO2 and waste away from tissues, regulates body temperature
Describe: Lymphatic and Immune system
- Lymphatic vessels and tissue
- Spleen, lymph nodes, thymus, tonsils
- Returns tissue fluid to the blood stream
- Produces the immune response to protect against invading organisms
Describe: Respiratory system
- Lungs and a series of passages leading in and out of the body
- Pharynx, larynx, trachea, and bronchial tubes
- Diaphragm
- Supplies oxygen to the bloodstream and eliminates CO2, regulates acid-base balance, vocal sounds
Describe: Digestive system
- Gastrointestinal tract and associated organs
- Pharynx, esophagus, stomach, sm & lrg intestine, anus
- Pancreas, liver, gallbladder
- Physical and chemical break down of food, absorption of nutrients, and elimination of wastes
Describe: Urinary system
- Kidneys, Bladder, Ureters, and Urethra
- Eliminates nitrogenous wastes, regulates water, electrolyte and acid-base balance of blood
Describe: Reproductive system
- Ovaries, fallopian tubes, uterus, vagina, mammary glands
- Testes, vas deferens, seminal vesicles, prostate, penis
- Reproduces the human species
Define: Homeostasis
*What is an important aspect of homeostasis?
The maintenance of a relatively stable internal body environment
- An important aspect of homeostasis is maintaining the volume and composition of body fluids
- The balance to keep us healthy
What is the feedback system? And what are the 3 basic components?
It is a cycle of events in which the status of a body condition is monitored, evaluated, change, remonitored, reevaluated, and so on.
- A receptor, a control center, and an effector
What is a controlled condition in a feedback system? And what is a stimulus?
Controlled condition - A monitored variable such as body temperature, blood pressure, or blood glucose levels
Stimulus - Any disruption that changes a controlled condition
What is the role of a receptor?
A body structure that monitors changes in a controlled condition and sends INPUT (in the form of nerve impulses or chemical signals) to a control center (afferent pathway= information flows toward the control center)
What is the role of a control center?
It sets the range of values within which a controlled condition should be maintained (set point), evaluates the input it receives from receptors, and generates OUTPUT (nerve impulses, chemical signals, or hormones) commands when they are needed. (efferent pathway= information flows away from the control center)
What is the role of an effector?
It is a body structure that receives output from the control center and produces a response or effect that changes the controlled condition
- Nearly every organ or tissue in the body can behave as an effector
Operation of a feedback system:
A _____ disrupts homeostasis by increasing or decreasing a ______ that is monitored by ______ that send nerve impulses or chemical signals (input) to a ______ that receives the input and provides nerve impulses or chemical signals (output) to ____ that bring about a change or response that alters ______, which returns to _____ when the response brings the controlled condition back to normal.
Operation of a feedback system:
A STIMULUS disrupts homeostasis by increasing or decreasing a CONTROLLED CONDITION that is monitored by RECEPTORS that send nerve impulses or chemical signals (input) to a CONTROL CENTER that receives the input and provides nerve impulses or chemical signals (output) to EFFECTORS that bring about a change or response that alters THE CONTROLLED CONDITION, which returns to HOMEOSTASIS when the response brings the controlled condition back to normal.
What’s the difference between a negative and a positive feedback system?
Negative - reverses a change in a controlled condition
* ex. if blood pressure is high, negative feedback system kicks in to lower blood pressure
Positive - strengthens or reinforces a change in one of the body’s controlled conditions
* The effector produces a physiological response that adds to or reinforces the initial change in the controlled condition. The action continues until it is interrupted by some mechanism
Which body system matches with this statement?
- Secretes hormones that regulate body processes
Endocrine system
Which body system matches with this statement?
- Rids the body of nitrogenous waste
Urinary system
Which body system matches with this statement?
- Removes CO2 from the blood
Respiratory system
Which body system matches with this statement?
- Brain, spinal cord and nerves are part of this system
Nervous system
Which body system matches with this statement?
- Damaged skin due to excessive exposure to the sun
Integumentary system
Which body system matches with this statement?
- This system is responsible for the movement of bones
Muscular system