BYU Anatomy Lecture Exam 3

0.0(0)
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/346

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

347 Terms

1
New cards

4 types of tissue

epithelial, connective, muscle, nervous

2
New cards

3 main types of connective tissue

connective tissue proper, fluid connective tissue, supporting connective tissue

3
New cards

common origin of all connective tissue

mesenchyme

4
New cards

What kind of connective tissue is blood

fluid connective tissue

5
New cards

functions of blood

transportation, regulation, defense

6
New cards

What does blood transport?

oxygen, carbon dioxide, nutrients, hormones, and waste products

OCNHW
Oh Can nobody Help women

7
New cards

What does blood regulate?

body temp, pH, fluid volume

8
New cards

how does blood protect from infection?

transports infection-fighting antibodies and forms blood clots

9
New cards

composition of blood

55% plasma, 45% formed elements (erythrocytes and 1% buffy coat)

10
New cards

water (composition of plasma)

92%

11
New cards

proteins in plasma

7% by weight
albumins, globulins, fibrinogen, regulatory proteins

AGFR
America's great for real

12
New cards

fibrinogen

plasma protein that is converted to fibrin in the clotting process. Fibrin helps stop bleeding and makes blood clots

13
New cards

albumin

Helps maintain fluid balance in body

14
New cards

globulin

help keep body safe from "intruders"

15
New cards

solutes in plasma

electrolytes, nutrients, respiratory gases, waste products

ENRW
everyones not really well

16
New cards

Erythrocytes

red blood cells

17
New cards

shape of erythrocytes

small biconcave disks (allows gases to be loaded and unloaded efficiently)

18
New cards

erythrocytes are filled with

hemoglobin

19
New cards

hemoglobin transports...

O2 and some CO2

20
New cards

Do erythrocytes have a nucleus and organelles?

no

21
New cards

how do RBCs move through blood vessels?

line up in single file and bend as they pass through small vessels

22
New cards

where do erythrocytes form?

red bone marrow

23
New cards

Erythrocytes circulate in the bloodstream for up to...

120 days

24
New cards

Where are aged erythrocytes phagocytized?

liver, spleen, bone marrow

25
New cards

what does it mean to be phagoctized?

basically cleaned up by the bodies immune system

26
New cards

What happens to old erythrocytes?

broken down and reused to make new erythrocytes

The heme is converted to bilirubin and secreted in bile by the liver

The iron is bound to a transporter protein and recycled back to the bone marrow to synthesize new RBCs

27
New cards

Polycythemia

• Too many erythrocytes in the blood
• Increases viscosity of blood, placing strain on the heart

28
New cards

Anemia

Low levels of erythrocytes or hemoglobin leads to low blood O2 levels

29
New cards

leukocytes

white blood cells

30
New cards

Which is larger: erythrocytes or leukocytes?

leukocytes

31
New cards

do leukocytes have a nucleus and organelles?

yes

32
New cards

What do leukocytes do?

initiate the immune response and defend against pathogens

33
New cards

Diapedesis

WBCs leave the bloodstream and enter tissues

34
New cards

Chemotaxis

WBCs are attracted to site of infection by damaged cells, dead cells, or invading pathogens

35
New cards

2 types of leukocytes

granulocytes and agranulocytes

36
New cards

3 types of granulocytes

neutrophils, eosinophils, basophils

NEB

37
New cards

2 types of agranulocytes

lymphocytes and monocytes

38
New cards

What do neutrophils do?

phagocytize pathogens

39
New cards

What do eosinophils do?

destroy parasites and increase during allergic reactions

40
New cards

What do basophils do?

promotes inflammation by releasing histamine and heparin

41
New cards

What do monocytes do?

Exits bloodstream, becomes a macrophage Phagocytizes pathogens and debris

42
New cards

What do lymphocytes do?

Resides in lymphatic tissue
Coordinates immune response
T cells, B cells, and natural killer cells

43
New cards

leukocytosis

Abnormally high WBC count (results from infection, inflammation, or extreme stress)

44
New cards

leukopenia

low WBC count (results from certain viral or bacterial infections)

45
New cards

leukemia

• Cancer in the leukocyte-forming cells in the bone marrow
• Proliferation of abnormal leukocytes
• Cancer cells take over bone marrow and slow production of erythrocytes and platelets, causing anemia and bleeding

46
New cards

Megakayocytes

intermediate cell from myeloid stem cells that are HUGE, they function to break apart or explode into a bunch of platelets

47
New cards

Platelets

aka Thrombocytes
Cell fragments of megakaryocytes
Platelets live for 8 to 10 days
Assist in blood clotting

48
New cards

blood clots are formed from...

fibrin, platelets, and trapped erythrocytes

49
New cards

2 types of clotting disorders

thrombocytosis and thrombocytopenia

50
New cards

thrombocytosis

high platelet count
results from disease of blood or bone marrow, cancer, removal of spleen, or an infection

51
New cards

Thrombocytopenia

Low platelet count
Results from damage to bone marrow, chemotherapy, leukemia, or overactive spleen

52
New cards

what determines blood type?

surface antigens

53
New cards

type A antigen

Antigen A

54
New cards

type B antigen

Antigen B

55
New cards

type AB antigen

both A and B antigens

56
New cards

type O antigen

no antigens

57
New cards

Hematopoiesis

production of bloods formed elements

58
New cards

Where does hematopoiesis occur?

red bone marrow

59
New cards

erythropoieses

production of red blood cells

60
New cards

Leukopoiesis

production of white blood cells

61
New cards

Thrombopoiesis

production of platelets

62
New cards

erythropoietin

made by the kidney to control erythrocyte production

63
New cards

what forms all blood cells?

hemopoietic stem cells (hemocytoblasts)

64
New cards

average heartbeats per minute

75

65
New cards

average heartbeats per day

108000

66
New cards

average cardiac output

5.25 L/minute

67
New cards

function of the heart

dual pump for the pulmonary and systemic circuits

68
New cards

heart orientation

-within the mediastinum
-lies on the diaphragm, posterior to the sternum
-base: posterior and superior surface of the heart
-apex: anterior and inferior, points to the left hip

69
New cards

three layers of the pericardium

fibrous, parietal, visceral

70
New cards

serous pericardium

parietal layer and visceral layer

71
New cards

pericardial cavity

contains serous fluid

72
New cards

pericardium functions

-prevents undesired movement
-prevents overfilling of the heart
-reduces friction

73
New cards

layers of the heart wall

epicardium, myocardium, endocardium

74
New cards

epicardium

visceral layer of serous pericardium; simple squamous epithelium

75
New cards

myocardium

cardiac muscle; bulk of the heart wall

76
New cards

endocardium

lines chambers and covers valves; simple squamous epithelium; also called "endothelium"

77
New cards

heart chambers and circuits

atria, ventricles, pulmonary circuit, systemic circuit

78
New cards

pulmonary circuit

carries blood to and from the lungs; right ventricle is the pump

79
New cards

systemic circuit

transports blood to and from the body tissues; left ventricle is the pump

80
New cards

structures of the right atrium

superior vena cava, inferior vena cava, coronary sinus, interatrial septum, fossa ovalis, pectinate muscles, sinoatrial node, atrioventricular node, tricuspid valve

81
New cards

structures of the right ventricle

pulmonary trunk, trabeculae carneae, papillary muscles, chordae tendineae, pulmonary valve

82
New cards

structures of the left atrium

interatrial septum, pectinate muscles, bicuspid valve

83
New cards

structures of the left ventricle

aorta, trabeculae carneae, papillary muscles, chordae tendineae, aortic valve

84
New cards

right atrium

receiving chamber for oxygen poor blood from the systemic circuit

85
New cards

two conducting nodes

sinoatrial node, atrioventricular node

86
New cards

Where are pacemaker cells located?

sinoatrial node

87
New cards

right ventricle

pump of the pulmonary circuit; ejects oxygen poor blood into the pulmonary trunk

88
New cards

papillary muscles

anchor chordae tendineae

89
New cards

chordae tendineae

prevent valves from everting

90
New cards

left atrium

posterior surface of the heart, receives oxygen rich blood from lungs through pulmonary veins

91
New cards

left ventricle

forms the apex and inferior surface of the heart; pump of the systemic circuit; ejects oxygen rich blood into the aorta

92
New cards

which chamber is the most muscular?

left ventricle

93
New cards

structure of heart valves

-composed of dense connective tissue
-two or three cusps

94
New cards

function of heart valves

-permit passage of blood in one direction
-prevent backflow of blood

95
New cards

fibrous skeleton

dense connective tissue located between the atria and the ventricles

96
New cards

functions of the fibrous skeleton

separates the atria and ventricles (structurally and electrically), anchors heart valves, framework for cardiac muscle attachment

97
New cards

cardiac muscle tissue

-cells are short, branched, striated, and contain 1-2 nuclei
-cells are joined by intercalated discs (gap junctions and desmosomes)
-more mitochondria and ATP than skeletal muscle

98
New cards

gap junctions

increase flow of electrical current

99
New cards

desmosomes

prevent cardiac muscle from pulling apart

100
New cards

conduction system

specialized cardiac muscle cells that carry electrical impulses throughout the heart musculature (interatrial band, sinoatrial node, internodal pathway, atrioventricular node, atrioventricular bundle, right bundle branch, purkinje fibers, left bundle branch)