Exam 3 Flashcards
Four things that make up the lymphatic system
Lymph
Lymphatic Vessels
Lymphoid Organs
Lymphoid Tissue Throughout Body
Lymphoid Tissue Throughout the Body (M.A.L.T.)
Mucosal Associated Lymphoid Tissue
Three functions of the lymphatic system
Returns tissue to blood stream
Absorbs fats and fat soluble vitamins from intestine
Defends body against disease
Clear fluid that resembles plasma
Lymph
Process of plasma –> tissue fluid –> lymph
Plasma in blood gets absorbed by tissue to become tissue fluid and then gets absorbed by lymphatic tissue to become lymph
Approximately __L/day of lymph filtered from __________ (tissue space)
20L/day
Interstitium
Lymphatic capillaries contain ______ and _______.
pores and valves
Capillaries drain into larger vessels that eventually drain into the left and right __________ _____.
Subclavian Veins
Lymphatic vessel that drains 3/4 of the body?
Which side of the body?
Thoracic Duct
Left Side
Lymphatic vessel that drains remaining 1/4 of the body?
Right lymphatic duct
Region of the body that is drained by the right lymphatic duct
upper right quadrant
Three mechanisms that the movement of lymph through lymphatic vessels depends on.
Contraction of skeletal muscles
Changes in intrathoracic pressure - breathing
Contraction/relaxation of smooth muscle in walls of lymphatic vessels
Small, pea shaped patches of lymphatic tissue; filter lymph as it flows through lymph vessels
Lymph Nodes
Three locations of clusters of lymph nodes
Cervical
Axillary
Inguinal
________ vessels carry lymph TOWARD the lymph node
Afferent
________ vessels carry lymph AWAY from the lymph node
Efferent
Outer shell that encases the lymph node
Capsule
Three internal components of a lymph node.
Reticular Fibers
Lymphatic Nodules
Phagocytes
Lymphatic nodules are _______ __ ___________
Clusters of lymphocytes
Phagocytes are composed of _________.
Macrophagia
Partially encapsulated lymph nodes located in area of nose and mouth.
Tonsils
Three sets of tonsils and location
Palatine - back of mouth/throat
Pharyngeal - back of nose
Lingual - back of tongue
The _______ gland is located in the upper mediastinum.
Thymus
The thymus gland is involved in the development of the ________ _______ before birth and shortly after birth.
immune system
Hormones secreted by thymus
Thymosins
Thymosins promote proliferation and maturation of _-____ in ______ ______
T-cells
lymphoid tissue
The thymus gland _______ following puberty
Involutes
What does it mean for the thymus to INVOLUTE?
shrink
Largest lymphoid organ
Spleen
Main purpose of spleen
filter and clean blood
Two tissue types spleen is composed of
White Pulp
Red Pulp
White pulp of spleen
lymphoid tissue surrounding blood vessels
Red pulp of spleen
blood-filled venous sinuses
Four additional functions of the spleen
blood storage
destroy old RBCs
Erythropoiesis
Lymphocyte production
Lymphoid tissue reaches peak development at ________
puberty
Lymphoid tissue gradually _______ in size following _______
decreases
puberty
Thymus gland _______ with age. Gland tissue is replaced with ___________ tissue.
involutes
connective tissue
The involution of the thymus gland with age results with… (2 things)
thymosins decrease in production
decreased defense mechanisms
Three types of non-specific first-line immune defenses
Mechanical Barriers
Chemical Barriers
Reflex
Two first-line-defense mechanical barriers
Skin
Mucous membranes
Five first-line-defense chemical barriers
Tears (Lysozymes) Saliva Sweat Stomach Acid Mucus
Four first-line-defense reflexes
Sneezing
Coughing
Vomiting
Diarrhea
Five non-specific second lines of defense
Phagocytosis Inflammation Fever Protective Proteins Natural Killer Cells
Phagocytosis
Surrounding and destroying foreign cells
Three different phagocytes
Neutrophils
Monocytes
Macrophages
Chemical signaling to attract phagocytes to area of tissue damage/infection
Chemotaxis
The movement of WBCs through endothelium of blood vessels into the tissue space
Diapedesis
Movement/deformation of the phagocytes through a capillary wall
Diapedesis
Four symptoms of inflammation
Redness
Heat
Swelling
Pain
Chemical responsible for inflammation
Histamine
Histamine causes _________ and increased _________ _________.
Vasodilation
Capillary Permeability
Fever occurs due to the release of _________ by _________
Pyrogens
Phagocytes
The release of pyrogens by phagocytes…
Increases ________ ______
Decreases ability of some ________ to multiply
Resets the ___________
Phagocytic activity
Pathogens
Hypothalamus
We reset the hypothalamus by ________ to increase temperature or ________ to decrease temperature
Shivering
Sweating
Protective proteins
Interferons
Interferons are secreted by cells _______ __ ______ to interfere with ________
infected by virus
replication
Protective protein complements (4)
Lysis
Agglutination
Phagocytosis
Chemotaxis
Natural killer cells are a type of _________ and kill a _______ __ _____
lymphocyte
variety of cells
3rd line of defense
Specific Immunity
Specific immunity is an _______ response
adaptive
Body’s ability to distinguish self from non-self
Immunotolerance
Technical term for “non-self”
antigenic
Specific immunity involves _________ and __________
lymphocytes and macrophages
Lymphocytes are formed in _______ ______
bone marrow
__ lymphocytes mature and differentiate in the ______
T lymphocytes
thymus
T lymphocytes are involved in _____ ________ immunity
cell mediated immunity
__ lymphocytes mature and differentiate in _____ _______
bone marrow
B lymphocytes are involved in ________ _________ immunity
antibody mediated immunity
Three steps of cell mediated immunity
Macrophage presentation
T-cell activation
Formation of clone
Macrophage presentation…
Macrophages engulfs ______ containing ________
________ is pushed to surface
antigen containing pathogen
Antigen
T-cell activation…
T-cell receptors bind to antigen and become activated
Formation of clones…
Activated T-cell divides repeatedly creating clones
Four T-cell clones
Killer
Helper
Suppressor
Memory
Killer T cells destroy pathogens by ___(5 words)____ or secreting _______
punching holes in cell membrane
lymphokines
Helper T cells enhance ________ _______ by stimulating __ and __ cells
immune response
T and B cells
Suppressor T cells ______ immune response following the destruction of the ________
inhibit
pathogen
Three steps of Antibody-Mediated immunity…
_________ ________
________ bind to receptors on _ and _ ___
Activated T cells secrete ________ causing B cells to reproduce forming clones
Macrophage presentation
Antigens… T and B cells
Lymphokine
B cell clones (2)
Plasma cells
Memory B cells
Plasma cells are filled with ______ ________ __________
Rough endoplasmic reticulum
Plasma cells produce ________
antibodies
What makes the endoplasmic reticulum of plasma cells “rough?”
ribosomes
Antibodies aka ____________
immunoglobulins
Antibodies are secreted by _ ____ to destroy ______
B cells
antigens
4 types of immunoglobulins
IgG IgA IgM IgE (GAME)
Most abundant immunoglobulin and found in ______ and body fluid.
IgG
plasma
Immunoglobulin found in secretion of exocrine glands
IgA
3 exocrine gland secretions containing ___ (immunoglobulin)
Tears, breast milk, gastric juice
IgA
Immunoglobulin found in blood plasma
IgM
IgM is presented as ____-_ and ____-_ ________ in blood plasma
anti-A and anti-B antibody
Immunoglobulin involved in allergic response
IgE
Direct methods (2) antibodies destroy antigens
Antigen-antibody reaction
Agglutination
Indirect method antibodies destroy antigens
Activation of compliment proteins
Four aspects of activating complement proteins
stimulate chemotaxis
promote agglutination
enhance phagocytosis
encourage lysis
Primary response…
______ response to ______
_____ __________ (ref. to process speed)
____ plasma level of antibodies.
Initial response to antigen
Slow developing
Low plasma level in antibodies
Secondary response…
______ exposure to ____ _____
_____ _______ (ref. to process speed)
______ plasma level of antibodies
Second exposure to same antigen
Fast acting
Higher plasma level of antibodies
Term for level of antibodies in blood
Antibody Titer
ACTIVE naturally acquired immunity…
Produces ________ after exposure to _______
Produces antibodies after exposure to antigen
PASSIVE naturally acquired immunity…
Receive antibodies from ________ via _______ or _____ ____.
Receive antibodies from mother via placenta (IgG) or breast milk (IgA)
Two types of active vaccine…
Solution of _____ or ________ _______
________ - vaccine made from the altered _____ of a pathogen
Solution of dead or attenuated pathogens
Toxoid - vaccine made from the altered toxins of a pathogen
Passive acquired immunity…
Immune _______ - _________ produced by a donor are injected into an individual
Immunity globulin - antibodies produced by a donor are injected into an individual
Effect of passive acquired immunity…
Provides _________, _____-____ protection agains a certain antigen/pathogen
Immediate, short-term protection
Delayed-reaction allergy usually takes __ _____ to occur
48 hours
Delayed-reaction allergy typically occurs following ________ ________ of ____ to certain chemicals/irritants - __________ _______
repeated exposure of skin…
Contact Dermatitis
Immediate-reaction allergy…
- Allergens activate __ _____
- Activated __ _____ form clone _____ ____
- ______ ____ secretes ___ against allergen
- ___ antibodies bind to ____ ____ in _____
- _____ _____ release ________, _________
- Allergen activates B cell
- Activated B cell forms clone of plasma cell
- Plasma cell secretes IgE against allergen
- IgE antibodies bind to mast cells in tissue
- Mass cells release histamine, leukotrienes
Two aspects of anaphylactic shock
widespread vasodilation - decreased BP
Bronchoconstriction - difficulty breathing
Disease in which T cells attack own body
Autoimmune Disease
S.L.E. (autoimmune disease)
Systemic Lupus Erythematosis
Two symptoms of S.L.E.
Butterfly rash
Photosensitivity
M.G. (autoimmune disease)
Myasthenia Gravis
Symptom and cause of Myasthenia Gravis
Drooping eye lid due to
Loss of nerve-to-small-muscle connection
Autoimmune disease related to joints
Rheumatoid Arthritis
Rheumatoid arthritis is an _________ response
Inflammatory response
Two prevention methods of organ rejection
Immunologically similar donor
Immunosuppressants
5 parts of upper respiratory tract
Nose Nasal Cavities Pharynx Larynx Upper Trachea
5 parts of lower respiratory tract
Lower Trachea Bronchi Bronchioles Alveoli Lungs
4 parts of respiratory epithelium
Mucus membrane
Mucus ceil
Cilia
Vascular
Air enters through the nostrils or nares which _____, ______ and _______ incoming air
warms
filters
moistens
The _____ and _____ _____ cavities are separated by the _______ ______
RIGHT and LEFT NASAL cavities are separated by the NASAL SEPTUM
The nasal cavities contain ________ receptors
Olfactory receptors
Three pieces of tissue contained in the nasal cavity, which are line a _______ ______
superior, middle and inferior conchae
mucus membrane
_______ sinuses drain into the nasal cavity
Paranasal
4 paranasal sinuses
Sphenoid
Frontal
Maxillary
Ethmoid
Three regions of the pharynx
Nasopharynx
Oropharynx
Laryngopharynx
Pharynx contains _______ and openings for _________ _____
tonsils
eustachian tubes
Eustachian tubes are located in the ________.
They connect the _______ and _______ ____.
Function - ________ ________
pharynx
connect the pharynx and middle ear
pressure balance
Three cartilage pieces of the larynx
Thyroid
Cricoid
Epiglottis
Adam’s Apple
Thyroid
Function of true vocal cords
Sound production
Function of false vocal cords
Helps close airway during swallowing
Function of epiglottis
Prevent food from entering the larynx
__________ causes the ______ ____ to thicken, lengthen and the ______ to increase in size thereby causing the voice to deepen.
Testosterone
vocal cords
larynx
Dimensions of the trachea
1” dia. x 4”-5” long
The trachea ends by bifurcating into primary (right and left) bronchi at the _______
carina
Primary bronchi…
Right - oriented _________
Left - oriented more _________ due to the ______
Right - oriented vertically
Left - oriented more horizontally due to the heart
The secondary bronchi extend into individual _____ __ _____.
__ to the right
__ to the left
lobes of lungs
3 to the right
2 to the left
Bronchi divide repeatedly into smaller structures termed _______
bronchioles
Bronchioles contain ______ _____ that allow them to change diameter
smooth muscle
Bronchioles extend to ______ ____
alveolar ducts
Alveolar ducts end in small sac-like structures called ______
alveoli
Each alveoli is surrounded by ________ _______
pulmonary capillary
Oxygen and carbon dioxide are exchanged in the pulmonary capillaries due to _______
diffusion
The lungs are located within the _______ cavities
pleural cavities
_______ membranes line the lungs and inner chest wall.
Pleural Membranes
________ pleura lines the lungs.
________ pleura lines the chest wall.
Visceral (lungs)
Parietal (chest wall)
Space between the visceral and parietal pleura
Pleural Cavity
_______ fluid secreted by pleural membranes decreases friction during respiration
Serous fluid
Excess accumulation of fluid in pleural cavity
Pleural Effusion
Lungs secrete pulmonary ________ which decreases the surface tension within the lung
Surfactant
Puncture in the chest wall/Rupture in lung
Pneumothorax
The measure of elastic recoil in the lungs
Compliance
Decreased compliance:
Lung tissue is _____ ______
Increased level of _______ _____
Lungs have difficulty fully inflating
Lung tissue is more “stiff”
Increased level of elastic recoil
Increased compliance:
Lung tissue is _____ ______
Decreased level of _______ ______
Lungs unable to fully expel air
Lung tissue is less “stiff”
Decreased level of elastic recoil
Barrel chest
Emphysema
Three steps during respiration
Ventilation
Exchange of carbon dioxide & oxygen
Transport of carbon dioxide & oxygen
Boyles Law
PV = k
Pressure x Volume = constant
Diaphragm is innervated by the ______ nerve.
Phrenic Nerve
_______ intercostals are muscles of inhalation
_______ intercostals are muscles of exhalation
External - inhalation
Internal - exhalation
_______: an active process requiring ATP
______ _______: Passive - does not require ATP
_______ _______: An active process requiring ATP
Inhalation - ATP
Quiet exhalation - NO ATP
Forced exhalation - ATP
Carbon dioxide and oxygen are exchanged between the ________ of the ______ and ________ _______
between the MEMBRANES of the ALVEOLI and PULMONARY CAPILLARIES
Three characteristics that make lungs effective exchangers of oxygen and carbon dioxide
Large surface area
Thin walled alveoli and pulmonary capillaries
Close proximity of alveoli to pulmonary capillaries
Diffusion of oxygen and carbon dioxide in the lungs depends on __________ ________ and ______ pressure
concentration gradients
partial pressure
The pressure exerted by one gas in a gas mixture
Partial Pressure
Most oxygen in blood binds with _________ of RBC to be transported to cells
hemoglobin
oxyhemoglobin
Carbon dioxide transport:
__% is dossilved in _______
__% binds with ________ of RBC to be transported to lungs
__% is converted to __________ (HCO3-)
10% is dissolved in PLASMA
20% binds with hemoglobin…. (carbaminohemoglobin)
70% is converted to BICARBONATE (HCO3-)
Amount of air moved in or out of lungs with each breath
Tidal Volume
The additional amount of air that can be inhaled following a normal breath
Inspiratory reserve volume
The additional amount of air that can be exhaled following a normal breath
Expiratory reserve volume
Amount of air remaining in lungs following maximal exhalation. There is always some air remaining in the lungs.
Residual Volume
The maximum amount of air that can be exhaled following maximal inhalation
Vital Capacity
Vital capacity = ______ reserve volume + ______ volume + _______ reserve volume
Vital capacity = INSPIRATORY reserve volume + TIDAL volume + EXPIRATORY reserve volume
Two conditions that result in decreased vital capacity
Asthma & Emphysema
Air within conducting system during inhalation
Anatomical dead space
Three parts of anatomical dead space
Trachea
Bronchi
Bronchioles
Normal respiratory rate
12 - 20 breaths/min
4 parts of brain that control respiration
Medulla
Pons
Cerebrum
Hypothalamus (emotion)
Reflex that works with lungs in respiration
Hearing-Breuer Reflex
Three chemicals involved in respiration
H+
CO2
O2
Neuronal control centers for respiration (primary and modifier)
Primary - Medulla
Modifier - Pons
Chemical control of respiration:
________ _________
Located in CNS (medulla oblongata)
Detect changes on CO2 & H+
Central Chemoreceptors
Chemical control of respiration:
_________ ________
Located OUTSIDE of CNS
Respond primarily to decreased O2 levels and increased H+ levels
Peripheral Chemoreceptors
_____ is a major regulator of respiration
PCO2
Decreased levels of CO2 in blood
Hypocapnia