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Human Anatomy > Quiz 4 flashcards > Flashcards

Quiz 4 flashcards

1
Q

What are the 5 different types of Leukocytes (WBC’s)?

A

-Neutrophils
-Eosinophils
-Basophils
-Lymphocytes
-Monocytes

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2
Q

What are the characteristics and functions of Neutophils?

A

CHARACTERISTICS:
-50-70% of total leukocyte count

-stains that are chemically neutral (neither acidic nor basic)

-nucleus has a distinct lobed appearance and have 2-5 lobes

-polymorphonuclear/nucleus with many forms

FUNCTION:
-responders to the site of infection and are efficient phagocytes with a preference of bacteria

-granules:
-lysozymes
-oxidants (hydrogen peroxide)
-defensins that are proteins that bind to and puncture bacterial and fungal plasma membranes

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3
Q

What are the characteristics and functions of Eosinophils

A

CHARACTERISTICS:
-2-4% of total leukocyte count

-stain best with an acidic stain known as eosin

-nucleus has 2-3 lobes and granules will have a distinct red to orange color

FUNCTION:
-granules include antihistamine molecules and counteract activities of histamines, inflammatory chemicals produced by basophils and mast cells

-toxic to parasitic worms

-high counts are typical of patients experiencing allergies, parasitic worm infestations, and some autoimmune diseases

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4
Q

What are the characteristics and functions of basophils

A

CHARACTERISTICS:
-less than 1% of total leukocyte count

-stain best with basic (alkaline) stains

-contain large granules that pick up a dark blue stain intensify the inflammatory response

FUNCTION:
-share traits with mast cells

-release histamines, which contribute to inflammation

-release heparin, which opposes blood clotting

-high counts are associated with allergies, parasitic infections, and hypothyroidism

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5
Q

What are the characteristics and functions of Lymphocytes

A

CHARACTERISTICS:
-only formed element of blood that arises from lymphoid stem cells

-20-30% of all leukocytes

-high lymphocyte counts are characteristic of viral infections

-3 major groups are: natural killer cells, B cells, and T cells

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6
Q

What are Natural killer cells (NK cells)

A

They recognize cells that do not express “self” proteins on their plasma membrane or that contain foreign or abnormal markers

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7
Q

What are B cells (plasma cells)

A

-Produces the antibodies or immunoglobulins

-humoral (body fluid) immunity

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8
Q

What are T cells

A

-They provide cellular-level immunity by physically attacking foreign or diseased cells

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9
Q

What are the characteristics and function of Monocytes

A

CHARACTERISTICS:
-originate from myeloid stem cells
-2-8% of the total leukocyte count
-indented or horseshoe-shaped nuclei

FUNCTION:
-Surround and kill microorganisms
-ingest foreign material
-remove dead cells
-boost immune responses

-release antimicrobial defensins and chemotactic chemicals that attract other leukocytes to the site of an infection

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10
Q

What is hemopoiesis/hematopoiesis?

A

The process or blood replacement by the body

BEFORE BIRTH:
-liver
-spleen
-lymphatic tissue
-red bone marrow

AFTER BIRTH:
-red bone marrow
-cranial and pelvic bones
-vertebrae
-sternum
-proximal epiphyses of femur and humerus

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11
Q

What are 3 hemopoietic growth factors

A

-Erythropoietin
-Thrombopoietin
-Cytokines

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12
Q

What are Erythropoietin

A

-Secreted by kidneys in response to low oxygen levels

-prompts the production of erythrocytes

-athletes use synthetic EPO as a performance enhancing drug (blood doping) to increase RBC counts

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13
Q

What are Thrombopoietin

A

-Produced by the liver and kidneys

-triggers development of megakaryocytes into platelets

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14
Q

What are Cytokines

A

-Colony-stimulating factors (CSF’s)
-trigger the differentiating of myeloblasts into granular leukocytes, namely neutrophils, eosinophils, and basophils

-Interleukins
-signaling molecules important in hemopoiesis

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15
Q

What are the 4 types of anemia and their causes

A

SICKLE CELL
-genetic disorder caused by production of an abnormal type of hemoglobin called hemoglobin S

IRON DEFICIENCY
-most common
-insufficient iron available to allow production of sufficient heme

VITAMIN-DEFICIENT
-Megaloblastic anemia: Vit B12 deficiency and/or folate
-Pernicious anemia: Poor B12 absorption

THALASEMIA
-an inherited blood disorder characterized by less oxygen-carrying protein (hemoglobin) and fewer red blood cells in the body than normal.

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16
Q

What is the role of iron and B12 in blood?

A

IRON: allows the production of heme (a molecule that helps bind oxygen and iron in the blood stream)

B12: Forms red blood cells and DNA

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17
Q

What is the role/function of the kidneys in blood production

A

The kidneys secrete erythropoietin and produce thrombopoietin

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18
Q

What is the difference between anemia, thrombocytopenia, and leukemia

A

ANEMIA:
-when there is a lack of red blood cells or there are dysfunctional red blood cells leading to reduced oxygen flow to the body

THROMBOCYTOPENIA:
-blood may not clot properly, and excessive bleeding may result

LEUKEMIA:
-cancer involving an abundance of leukocytes

-Chronic leukemia is when mature leukocytes accumulate and fail to die

-Acute leukemia is when there is an overproduction of young, immature leukocytes

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19
Q

What are immunoglobulins

A

They are gamma globulins/antibodies and are produced by B cells (plasma cells) in response to exposure to antigens

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20
Q

What is the difference between oxygen rich and oxygen poor blood

A

OXYGEN RICH BLOOD: left side of the heat pumps blood from the lungs to the rest of the body (oxygenated blood)

OXYGEN POOR BLOOD: right side of the heart pumps oxygen rich blood from the body to the lungs to receive oxygen (non-oxygenated blood)

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21
Q

What are the layers of the heart wall

A

-Epicardium (outermost layer)
-Myocardium (middle layer)
-Endocardium (innermost layer)

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22
Q

what is the pericardium

A

It directly surrounds the heart and defines the pericardial cavity

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23
Q

What are the 4 valves of the heart and their functions

A

-Tricuspid valve: allow blood flowing into the heart from body to flow to the right ventricle to get pumped to lungs for oxygen

-Pulmonary valve: pick up oxygen to deliver to body

-Mitral valve: keep blood flowing in the right direction

-Aortic valve: keep blood flowing in the right direction through heart

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24
Q

What are the 5 great vessels of the heart

A

-inferior vena cava
-superior vena cava
-pulmonary arteries
-pulmonary veins
-root of the aorta

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25
Q

What is the path of blood flow through the heart

R.T.R.P.P.P.L.P.L.B.L.A.A.S

A
  1. Right atrium
  2. tricuspid valve
  3. right ventricle
  4. pulmonary semilunar valve
  5. pulmonary trunk
  6. pulmonary arteries
  7. lungs
  8. pulmonary veins
  9. left atrium
  10. bicuspid valve
  11. left ventricle
  12. aortic semilunar valve
  13. aorta
  14. systemic circulation
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26
Q

what is the chordae tendinae and its function

A

it is where the flab of the valve is attached and its function is to maintain the position and tension of the atrioventricular valves (tricuspid and bicuspid valve)

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27
Q

What is the papillary muscles function

A

-connect each of the flaps that extends from the inferior ventricular surface

-three papillary muscles in the right ventricle:
-anterior, posterior and septal
-correspond to the three sections of the valves

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28
Q

What is the function of the interventricular septum

A

it separates the two ventricles and allows for proper blood flow through the heart

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29
Q

What are the 4 chambers of the heart and their function

A

-RIGHT ATRIUM AND LEFT ATRIUM (upper chambers) :acts as a receiving chamber

-RIGHT VENTRICLE and LEFT VENTRICLE (lower chambers): serve as the primary pumping chambers

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30
Q

What are the 7 coronary arteries

A

-LEFT AND RIGHT CORONARY ARTERIES

-EPICARDIAL CORONARY ARTERIES

-CIRCUMFLEX CORONARY ARTERIES

-LEFT ANTERIOR DESCENDING ARTERY (LAD)

-MARGINAL ARTERIES

-POSTERIOR DESCENDING ARTERY

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31
Q

What is the function of the left and right coronary arteries

A

to supply blood to your heart

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32
Q

What is the function of the epicardial coronary artery

A

Branches that remain on the surface of artery and follow the sulci

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33
Q

What is the function of the circumflex arteries

A

-rises from the left coronary artery and follows the coronary sulcus to the left

-fuse with the small branches of the right coronary artery

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34
Q

What is the function of the left anterior descending artery

A

Interconnect with the branches of the posterior intercentricular artery, forming anastomoses

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35
Q

what is the function of the marginal arteries

A

to supply blood to the superficial portions of the right ventricle

36
Q

What is the function of the posterior descending artery

A

It gives rise to branches that supply the interventricular septum and portions of both ventricles

37
Q

What is the function or the pulmonary veins and arteries

A

PULMONARY VEINS: to transfer fresh oxygenated blood from the lungs to the left atria of the heart

PULMONARY ARTERIES: carry blood from your heart to your lungs

38
Q

What is vasodilation and vasoconstriction

A

VASODILATION:
-smooth muscle relaxes
-allowing the lumen to widen
-increases blood flow and blood pressure to drop

VASOCONSTRICTION:
-smooth muscle in the walls of the tunica media contracts
-making the lumen narrower
-decreases blood flow
-increases blood pressure

39
Q

What is the renal artery and its function

A

-the main blood vessel that supplies blood to a kidney and its nearby adrenal gland and ureter

-to carry larger amounts of blood from the aorta to the kidneys

40
Q

What is the common hepatic artery and its function

A

-one of the final branches of the celiac artery

-supplies oxygen rich blood to the liver, duodenum, and pancreas

41
Q

what is the aorta and its function

A

-the largest artery of the body

-carries blood from the heart to the circulatory system/the rest of your body

42
Q

What is the inferior mesenteric artery and its function

A

-An anterior branch of the abdominal aorta

-supplies blood to the distal 1/3 of the transverse colon, descending colon, and proximal 2/3 of the rectum

43
Q

What is the internal iliac artery and its function

A

-The primary artery supplying the pelvic viscera and an important contributor to structures of the pelvic wall, perineum, gluteal region, and thigh

44
Q

What is the commonly used vessel for blood extraction

A

-Tunica Intima/tunica interna
-Tunica media

45
Q

What is the hepatic portal vein

A

-a blood vessel that carries blood to the liver from the intestines, spleen, and gallbladder

-liver receives bloof from the normal systemic circulation via the hepatic artery

-it also receives and processes blood from other organs, delivered via the veins of the hepatic portal system

-all blood exits the liver bia the hepatic vein, which delivers the blood to the inferior vena cava

46
Q

What are the 4 vessels in the hepatic portal system

A

-hepatic portal
-superior mesenteric
-splenic
-inferior mesenteric

47
Q

What is the function of arteries

A

-Blood vessels that conducts blood away from the heart

48
Q

what are the 3 kinds of arteries

A

ELASTIC ARTERIES
-have the thickest walls
-contain high percentage of elastic fibers in all three tunics

MUSCULAR ARTERIES
-thick tunica media
-play a leading role in vasoconstriction
-also known as a distributing artery

ARTERIOLE
-very small artery that leads to a capillary

49
Q

What are capillaries

A

-they supply blood to the tissues themselves, a process called perfusion

-where exchange of gases and other substances occurs

-microcirculation (flow of capillaries)

-wall of capillaries consists of endothelial layer surrounded by a basement membrane

50
Q

What are the 3 major types of capillaries and how are they categorized?

A

-Continuous
-fenestrated
-sinusoid capillaries

They are categorized by “leakiness”

51
Q

What are continuous, fenestrated, and sinusoid capillaries and where are they found

A

CONTINUOUS:
-complete endothelial lining with thigh junctions
-intercellular clefts that allow for exchange
-glucose, water, and small hydrophobic molecules like gases and hormones, as well as various leukocytes can pass between

FENESTRATED:
-has pores (or fenestrations) in addition to tight junctions
-permeable to larger molecules
-common in small intestines, kidneys, and choroid plexus of brain

SINUSOID:
-flattened, and have intercellular gaps and incomplete basement membranes, in addition to intercellurlar clefts and fenestrations
-very large openings allow passage of the largest molecules, including plasma proteins and cells
-found in the liver and spleen, bone marrow, lymph nodes
-appearance not unlike swiss cheese

52
Q

What is the Circle of Willis and its function

A

-arterial circle

-provides collateral blood flow between the anterior and posterior circulations of the brain, protecting against ischemia in the event of vessel disease or damage in one or more areas

-anastomosis that is remarkably like a traffic circle that sends off branches (in this case, arterial branches to the brain)

-branches to the anterior portion of the cerebrum are normally fed by the internal carotid arteries

-remainder of the brain receives blood flow from branches associated with the vertebral arteries

-anterior cerebral artery supplies blood to the frontal lobe of the cerebrum

-middle cerebral artery supplies blood to the temporal and parietal lobes and is the most common sites of CVAs

53
Q

What are the 9 lymphatic structures

A

-lymphatic vessels
-lymph nodes
-lymphatic capillaries
-lacteals
-chyle
-lymphatic trunks
-cisterna chyli
-right lymphatic duct
-thoracic duct

54
Q

where are the tonsils located

A

along the inner surface of the pharynx

55
Q

what are peyer’s patches and its function

A
  • a group of well-organized lymphoid follicles located in the lamina propia and submucosa of the distal portion of the small intestines

-immune responses within digestive system

-contain endothelial cells called M (or microfold) cells

-Recognizes and destroys potential pathogens in digestive system

56
Q

What is the function of lacteals

A

they are lymphatic capillaries in the small intestines that transport dietary lipids and lipid-soluble vitamins to the blood stream

57
Q

What is the difference between red and white pulp

A

RED PULP:
-mostly RBC
-consists of reticular fibers with marophages and lymphocytes
-use nonspecific immune response cells
-filters the blood of antigens, microorganisms, and defective or worn out RBCs

WHITE PULP:
-resembles the lymphoid follicles of the lymph nodes
-surrounds a central arteriole
-consists of germinal centers of dividing B cells surrounded by T cells and acessory cells, including macrophages and dendritic cells
-where adaptive T and B cell responses are mounted
-function is to produce lymphocytes

57
Q

What is the difference between red and white pulp

A

RED PULP:
-mostly RBC
-consists of reticular fibers with marophages and lymphocytes
-use nonspecific immune response cells
-filters the blood of antigens, microorganisms, and defective or worn out RBCs

WHITE PULP:
-resembles the lymphoid follicles of the lymph nodes
-surrounds a central arteriole
-consists of germinal centers of dividing B cells surrounded by T cells and acessory cells, including macrophages and dendritic cells
-where adaptive T and B cell responses are mounted
-function is to produce lymphocytes

58
Q

What are the primary lymphoid organs

A

-red bone marrow
-thymus gland

59
Q

What are the secondary lymphoid organs

A

-lymph nodes
-spleen
-tonsils
-mucosa-associated lymphoid tissue (MALT)
-bronchus-associated lymphoid tissue (BALT)

60
Q

what are the Digestive tract-associated lymphatic tissues

A

Gut-associated lymphoid tissue (GALT) includes:
-tonsils
-peyer’s patches
-appendix
-colonic and cecal patches
-isolated lymphoid follicules (ILF)

61
Q

Where is MALT located?

A

found underlying the mucosa of the gastrointestinal, breast tissue, lungs, and eyes

62
Q

What is the parent cell for all formed elements of blood

A

hemocytoblast

63
Q

no visible cytoplasmic granules are present in
-monocytes
-basophils
-eosinophils
-neutrophils

A

monocytes

64
Q

A lack of intrinsic factor, leading to a deficiency of vitamin B12 and causing an appearance of large pale cells called macrocytes, is characteristic of what

A

pernicious anemia

65
Q

Which of the following is characteristic of all leukocytes?
-They are the most numerous of the formed elements in blood.
-They are nucleated.
-They have cytoplasmic granules.
-They are phagocytic.

A

they are nucleated

66
Q

what does the foramen ovale do

A

connects the two atria in the fetal heart

67
Q

When viewing a dissected heart, it is easy to visually discern the right and left ventricles by ________.

A

noticing the thickness of the ventricle walls

68
Q

match the following figure with the correct part/s of the part
-tricuspid valve
-left ventricle
-pulmonary veins

A

-tricuspid valve - B
-left ventricle - E
-pulmonary veins - C

69
Q

what is the difference between skeletal muscle and cardiac muscle

A

cardiac muscles have gap junctions that allow it to act as a functional syncytium

70
Q

what part of the heart prevents backflow into the left ventricle

A

aortic valve

71
Q

true or false, vasodilation is a widening of the lumen due to smooth muscle contraction

A

false

72
Q

Which statement best describes arteries?
-All carry oxygenated blood to the heart.
-All contain valves to prevent the backflow of blood.
-All carry blood away from the heart.
-Only large arteries are lined with endothelium.

A

-All carry blood away from the heart.

73
Q

The hepatic portal vein ________.

A

carries nutrient rich blood to the liver

74
Q

what is the most common type of blood capillary

A

continuous capillary

75
Q

Permitting the exchange of nutrients and gases between the blood and tissue cells is the primary function of ________.

A

capillaries

76
Q

The arteries that are also called distributing arteries are the ________.

A

muscular arteries

77
Q

Which tunic of an artery is most responsible for maintaining blood pressure and continuous blood circulation?

A

tunica media

78
Q

Modified capillaries that are lined with phagocytes are called ________.

A

sinusoids

79
Q

what are small organs intimately associated with lymphatic vessels called

A

lymph nodes

80
Q

Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax?

A

right lymphatic duct

81
Q

Which of the following is not a part of the lymphatic system?!
-erythrocytes
-lymph
-lymphatic vessels
-lymph nodes

A

erythrocytes

82
Q

the main site of gas exchange is the____.

A

alveoli

83
Q

The walls of the alveoli are composed of two types of cells, type I and type II. The function of type II is to ________.

A

secrete surfactant

84
Q

Select the correct statement about the pharynx.

-The pharyngeal tonsil is located in the laryngopharynx.
-The laryngopharynx blends posteriorly into the nasopharynx.
-The palatine tonsils are embedded in the lateral walls of the nasopharynx.
-The auditory tube drains into the nasopharynx.

A

-The auditory tube drains into the nasopharynx.

Human Anatomy (4 decks)

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