Chapter 1 Flashcards
Anatomy
Form of body. How it’s built
Physiology
Functions. How they work
Physiology depends on
Structure
What do anatomists do?
See how the body is built.
Observation and dissection
Physiologists
See how they work through experiments
More common to find _____ discoveries
Physiological discoveries
Organelles
Aggregates of macromolecules.
Organs of cells.
Do something
Cells
Basic units of structure and function for living things
Tissues
Group of cells that work together
Organs
Group of tissues that do something
Organ systems
Groups of organs that do things together. Digestive is an example
Organism
Group of organ systems that work together
10 Characteristics of life
Movement
Responsiveness
Growth
Reproduction
Respiration
Digestion
Absorption
Circulation
Assimilation
Excretion
Movement
Change a position in body
Responsiveness
Reacts to changes
Growth
Increase in size WITHOUT CHANGING SHAPE
REPRODUCTION
Make new organisms or cells
Respiration
Use O2
Remove CO2
Digestion
Break food in simpler forms
Characteristics of life are shared by ___ organisms
All
Metabolism made by
10 Characteristics of life together
Metabolism
Physics and chem of Getting
Releasing
Using
Energy
Absorbtion
Substances move in and out of membranes and into fluids
Circulation
Movement within body fluids
Assimilation
Changing nutrients into chemically different forms
Excretion
Removal of metabolic wastes
How do you maintain life?
Water
Food
Oxygen
Heat
Pressure
What does water do?
-most abundant
-used in metabolic processes
-environment for metabolic processes
-transportation medium
-regulates body temp
-makes intracellular and extracellular fluid compartments
Food
Nutrients
Energy
Raw materials
For growing and repairing
Regulating chemical reactions
Oxygen
Releases energy from food
Important to mitochondria
Heat
Product of metabolic reactions that *controls reaction rate *
Temperature
Degree of heat
Pressure
Force applied to something
Atmospheric
Breathing
Hydrostatic pressure
Moves blood through blood vessels
The ____ and ____ of the charactisrics of life are important
Amount & quality
How much and how good they are
Homeostasis
Balance
Stable internal environment
How is homeostasis regulated?
Control systems:
Receptors
Set point
Effectors
Receptors
Identify changes
Many types
Set point
Normal value
Effectors
Respond to change. Muscle glands
Fix problem
Make environment stable again
The body is constantly trying to maintain
Homeostasis
Homeostatic mechanisms control temperature similar to
AC systems
Examples of homeostatic mechanisms
Body temperature & BP
Can body levels differ from
Person to person
Baroreceptors regulate
BP
Negative feedback mechanisms
-moves in opposite direction from the change
Reduces the amount of change from set point
Includes most control mechanisms in body
Most common type of control mechanism
Negative feedback mechanisms
How do negative feedback mechanisms move?
Opposite direction from the change
What do negative feedback mechanisms do?
Reduce the amount of change from set point. Closer to set point
Normal body temperature
98.6 F
37C
Control system of temperature regulatory mechanisms
Brain
Effectors of body temp
Blood vessels dilating
Increasing skin blood flow. Reduces friction
Sweat glands
Receptors in body temperature mechanism
Thermoreceptors
What do blood vessels do when you get cold?
They constrict make you shiver
Positive feedback mechanisms
Getting away from set point
Change from set point gets bigger
What kind of conditions do positive feedback mechanisms produce in the body?
Unstable
Examples of positive feedback mechanisms
Blood clotting and birth
Only main 2 areas it’s associated with
How is the body organized?
- Body cavities
- Thoracic and abdominopelvic membranes
- Organ systems
Axial portion of body
(head, neck, trunk)
Appendicular
Upper and lower limbs
Axial portion contains
Cranial cavity
Vertebral cavity
Thoracic cavity
Cranial cavity
Brain
Vertebral cavity
Spinal cord
Thoracic cavity
Heart, lungs, mediastinum
Mediastinum
Space in chest that holds heart
Abdominopelvic cavity
Abdominal cavity
Pelvic cavity
Diaphragm
Abdominal cavity
Víscera of digestion (guts)
Spleen
Pelvic cavity
Large intestine, bladder internal reproductive organs
Diaphragm
Broad, thin muscle that separates thoracic and abdominopelvic cavities
Separates chest cavity from abdominopelvic cavity
Smaller cavities within head
Oral cavity
Nasal cavity
Orbital cavities
Middle ear cavities
Orbital cavities
Eyes
Which membranes are double layered?
The thoracic and abdominopelvic membranes
Parietal portion attaches to
Wall cavity
Visceral portion covers the
Internal organ
Parietal
Relating to the walls of a part or cavity. Outer surface of body part
Visceral
Large organs
Pleural membranes
Thin membranes related to lungs
Parietal pleura
Thin membrane that covers walls
Visceral pleura
Covers lungs
Serous fluid
Fluids that look like serum. Pale and yellow, usually harmless. Watery part of liquids in body
What surrounds the heart?
Pericardial membranes
Pericardial
Related to membrane that surrounds heart
What separated pleural membranes?
Serous fluid
Parietal pericardium
Membrane that surrounds outside or heart area
Visceral pericardium
Membrane that surrounds heart. Covers heart
What separates pericardial membranes?
Serous fluid
Peritoneal membranes
Line the abdominopelvic cavity
Parietal peritoneum
Lines wall of abdominopelvic cavity
Visceral peritoneum
Covers organs
Which organ system covers your body?
Integumentary system
Integumentary system
Skin
Hair
Nails
Glands.
Covers body
What does integumentary system do?
Protects inside tissues
Regulates body temp
Senses changes
Synthesizes certain products
What does the integumentary system synthesize?
Sweat
Sebum (oil)
Which systems help you move?
Skeletal and muscular
What is the skeletal system made of?
Bones and ligaments
What does the skeletal system do?
Supports body
Protects
Provides frameworks
Stores inorganic salts
Houses blood forming tissues
Muscular system
Muscles that provide body movement, posture and body heat
What does it mean to provide framework
Give shape and structure to body
Which organ systems give integration and coordination?
Nervous system
Endocrine system
Nervous system
Brain
Spinal cord
Nerves
Sense organs
Integrates incoming info and tells body what to do .
Sends impulses to muscles and glands
Endocrine system
Integrates metabolic functions
Parts of endocrine system
Hypothalamus
Pituitary,
Thyroid
Parathyroid
Pineal
Thymus gland
pancreas
Ovaries
Testes
(Other organs that secrete hormones)
Which systems are transport systems?
Cardiovascular
Lymphatic
Cardiovascular system parts
Heart
Blood vessels
What does the cardiovascular system do?
Distributes:
-Oxygen
-Nutrients
-Hormones
Removes wastes
Lymphatic system
Lymphatic vessels
Lymph nodes
Thymus
Spleen
What does the lymphatic system do?
Drains excess tissue fluid
Includes cells of immunity
Which organ systems are responsible for absorbtion and excretion?
Digestive system
Respiratory system
Urinary system
Digestive system
Mouth
Esophagus
Stomach
Intestines
Accessory organs
Accessory organs
teeth, tongue, and glandular organs such as salivary glands, liver, gallbladder, and pancreas.
Function of digestive system
Receive
Break down and absorb nutrients
Respiratory system function
Exchanges O2 and CO2 between blood and air
Respiratory system parts
Lungs and passageways
Urinary system parts
Kidneys,
Ureters,
Bladder,
Urethra
Urinary system function
Removes wastes from blood
Helps maintain water and electrolyte balance
Reproductive system function
Make new organisms
Male reproductive system parts
Testes
Accessory organs
Vessels that produce and conduct sperm to the female reproductive tract
Female reproductive system
Ovaries
Uterine tubes
Uterus
Vagina
External genitalia
Produces eggs and houses offspring
Anatomical position
Body erect
Face forward
Upper limbs at sides with palms facing forward
Terms of relative position
Location of body part with respect to another
Superior
Above another part
Inferior
Below another part
Anterior (ventral)
Towards front
Posterior (dorsal)
Towards back
Median
Closer to midline
Lateral
Towards side
Bilateral
Paired structures with one on each side
(Kidneys)
Ipsilateral
On same side
Right arm right leg
Contralateral
On opposite sides right leg, left arm
Proximal
Closer to the midline or trunk than another structure in the body
Closer to point of origin
Distal
Further away from the trunk or referenced body part
Superficial
Near surface
Peripheral
Outward or near the surface
Deep
More internal
Sagittal section
Divides body into right and left portions.
Median or midsagittal section
Passes through midline and body is divided in equal parts
Section lateral to midline
Parasagittal
Transverse section (horizontal)
Divides body into superior and inferior portions
Frontal (coronal)
Divides body into anterior and posterior sections
Parasagittal planes divides ____ into right and left sectiona
Unevenly
Body regions of abdominal area
Epigastric,
Right&left hypochondriac
Umbilical
Left lateral &right lateral (lumbar)
Pubic
Left inguinal and right inguinal (iliac)
Quadrants of abdominal area
Right, left upper
Right, left lower
Slow acting control system. Acts by means of hormones
Endocrine
Hormones circulate in the body to reach
Target cells
Endocrine system influences
Growth, development, reproduction, metabolism
What does the lymphatic system do?
Cleanse blood
House immunity cells
Nerve impulses
Electrical Signals sent by nervous system. Coordinate actions of target organs
Which body cavity contains mediastinum
Thoracic
Subdivisions of dorsal body cavity
Cranial and spinal