Shared Flashcard Set

Details

Medterm
Medterm
33
Physiology
11th Grade
03/10/2011

Additional Physiology Flashcards

 


 

Cards

Term
Blood Types
Definition
- AB : Universal recipient; donates to AB
- B : Receives from B & O; donates to AB&B
- A : Receives from A&O; donates to AB&A
- O : Universal donor; donates to AB&O
Term
Blood Components
Definition
WBCs 1%
RBCs 45%
Plasma 50%
Term
Blood Distribution
Definition
1) Deliver O2 from lungs & nutrients from digestive tract to body cells
2)Transport metabolic waste from cells to elimination sites
3) Transport hormones from endocrine organs to target organs
Term
Blood Regulation
Definition
1) Maintain appropriate body temp; Distr. body heat.
2) Maintain normal pH in body tissues
3) Maintain adequate fluid volume in circulatory system
Term
Blood Protection
Definition
1) Prevent blood loss
2) Prevent infection
Term
Heart Layers: Pericardium
Definition
Double walled sac

Consists of epicardium
Term
Heart Layers: Myocardium
Definition
Middle Layer.
Composed of cardiac muscle.
Forms the bulk of the heart; Contracts
Term
Heart Layers: Endocardium
Definition
White sheet of endothelium resting on a thin connective tissue later lines the heart chambers.

Covers fibrous skeleton of valves.
Term
EKG Tracing
Definition
- P Wave: Lasts 0.08 s; Results of movement of depolarization wave.
- QRS complex: Lasts 0.08 s; Results of ventricular depolarization.
- T Wave: .16 s; Caused by ventricular repolarization.
Term
Heart Sounds
Definition
"Lub-dup"
- 1st sound occurs as AV valves close. Signifies point when ventricular pressure rises above atrial pressure.
-2nd occurs when SI valves snap shut
Term
Heart Sounds
Definition
"Lub-dup"
- 1st sound occurs as AV valves close. Signifies point when ventricular pressure rises above atrial pressure.
-2nd occurs when SI valves snap shut
Term
Heart Sounds
Definition
"Lub-dup"
- 1st sound occurs as AV valves close. Signifies point when ventricular pressure rises above atrial pressure.
-2nd occurs when SI valves snap shut
Term
Function of Sinuses
Definition
Air conditioning
Heat insulation
Vocal resonance
Term
Respiration Functions
Definition
Ventilation
External Respiration
Transport
Internal Respiration
Term
Metabolism
Definition
- Sum total of chemical reactions occuring in body cells

- Metabolic processes are either anabolic or catabolic.
Term
Respiratory Capacities
Definition
1) Vital Capacity: Total amount of exchangeable air. Sum of TV, IRV, and ERV. Approx. 4800ml
2) Total Lung Capacity - Sum of all lung volumes. Normally around 6000 ml.
Term
Respiratory Volumes
Definition
- Total Volume: 500ml of air moves into & out of the lungs with each breath.
- Inspiratory Reserve Vol: Amount of air (2100-3200) that can be inspired forcibly beyond TV.
- Expiratory Reserve Vol: Amount of air (1000 to 1200) that can be evacuated from lungs after tidal expiration.
Term
Major Nutrients
Definition
Carbohydrates
Lipids
Proteins
Term
Main Organs: Stomach
Definition
Chemical breakdown of proteins begins.
Food converted to chyme.
Term
Main Organs: Liver
Definition
Secretes bile that ends up back in intestines.
Term
Main Organs: Pancreas
Definition
Produces enzymes that break down all food
Term
Main Organs: Small Intestine
Definition
Absorbs nutrients
Term
Main Organs: Large Intestine
Definition
- Absorbs most of remaining water from indigestible food residues.
- Stores the residues temporarily
- Eliminates them from body as feces
Term
Main Organs: Esophagus
Definition
Carry foods, liquids, and saliva from mouth to stomach
Term
Saliva
Definition
- Cleanses mouth, dissolves food chemicals, moistens food, & aids in compacting into bolus, & breaks down starchy foods.
- Produced by extrinsic salivary glands
- Salivary glands located outside oral cavity & throughout oral cavity mucosa.
Term
Circulatory System: Capillaries
Definition
- Smallest blood vessels
- Exchange of materials (gases, nutrients, hormones, ect. between blood & intestinal fluid).

- Types of capillaries: Continuous, fenestrated, & sinusoidal.
Term
Circulatory System: Veins
Definition
- Blood carried from capillary beds toward heart
- Venules are formed when capillaries united. Venules join to veins.
- The largest veins (Venae cavae) return blood directly to heart.
- Varicose veins have become tortuous & dilated.
Term
Circulatory System: Arteries
Definition
3 Groups:
1) Elastic - Thick walled near heart
2) Muscular - Deliver blood to specific body organs
3) Arterioles - When dilated, blood flows in to local capillaries increase dramatically. When constricted, tissues served are largely bypassed.
Term
Circulatory System: Similarities & Differences
Definition
- Arteries take blood away from heart
- Veins take blood to heart.
- Capillaries are where arteries become veins, vice versa.
Term
Circulatory System: Blood Flow
Definition
- Blood volume flowing through a vessel, an organ, or the entire circulation in a given period.
- Equivalent to cardiac output (Amount of blood pumped out by each ventricle in 1 min)
Term
Circulatory System: Blood Pressure
Definition
- Force per unit area exerted on a vessel wall by contained blood.

- Normal value: 120/80 or lower.
Term
Circulatory System: Resistance
Definition
- Opposition to flow, measure of amount of friction blood encounters as it passes through vessels.

- 3 important sources of resistance; Blood viscosity, vessel length, & vessel diameter.
Term
Respiratory System: Nose Functions
Definition
-Provides an airway for respiration
-Moistens & warms entering air
- Filters & cleans inspired air
- Serves as a resonating chamber for speech
- Houses the olfactory smell receptors
Supporting users have an ad free experience!