TEAS SCIENCE STUDY GUIDE PART ONE Flashcards

1
Q

What is a hypothesis?

A

an explanation formulated to answer the question being investigated.

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2
Q

What are the steps of forming a hypothesis?

A
  1. Identify the problem
  2. Ask questions
  3. Form hypothesis
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3
Q

What are the steps of the scientific method?

A
  1. Identify the problem
  2. Ask questions
  3. form hypothesis
  4. Data collection and experimentation
  5. Analysis
  6. Conclusion
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4
Q

What is data collection?

A

collection of data to test the hypothesis in a controlled environment.

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5
Q

What are the 4 steps of data collection?

A

observation
measurement
samples
organization

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6
Q

What is observation?

A

scientists use the 5 senses to learn as much as possible during data collection.

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7
Q

What is measurement?

A

collection of quantitative data

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8
Q

What are samples?

A

scientists obtain data from a subset of the population

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9
Q

What is organization?

A

placing information into tables and charts

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10
Q

What is experimentation?

A

Comparing a control group and an experimental group

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11
Q

What is analysis?

A

Researchers must determine if the data is reliable and whether or not it supports the hypothesis

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12
Q

What is conclusion?

A

scientists produce models to represent the explanation supported by the data.

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13
Q

What is a theory?

A

a broad statement of what is thought to be true

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14
Q

If the results of a experiment cannot be duplicated,

A

the argument loses its credibility.

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15
Q

What is deductive reasoning?

A

a method whereby conclusions follow general principles

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16
Q

What is inductive reasoning?

A

a method of arriving at general principles from specific facts.

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17
Q

I observed the sun setting this evening.
I have observed the sun setting daily, hundreds of times in my lifetime.
Based on these two statements, what general conclusion can be drawn?

A

Inductive reasoning can be used to conclude that the sun sets every day.

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18
Q

All men are mortal.
Sultan is a man.
Based on these two statements, what general conclusion can be drawn?

A

Deductive reasoning can be used to conclude that Sultan is a mortal.

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19
Q

What is anatomy?

A

study of the structure of organs and body systems

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20
Q

What is physiology?

A

the study of the function of the organ and body systems

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21
Q

What are atoms?

A

the smallest parts of elements that still retain all the original properties of the element.

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22
Q

What is a molecule?

A

chemical bonding of atoms that possesses its own characteristics independent of the atoms themselves.

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23
Q

What are cells?

A

the basic unit of all life

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24
Q

What are tissues?

A

when cells combine in terms of function and type

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25
Q

What is a organ?

A

when two or more tissues work together to perform a specific function

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26
Q

What is an organ system?

A

when organs work together to perform a specific task

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27
Q

How many organ systems are there in the human body?

A

11

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28
Q

What is the hierarchy of the structures in the human body from smallest to largest?

A
Atoms
Molecules
Cells
Tissues
Organs
Organ Systems
Organism
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29
Q

What are the four basic tissue types in humans?

A

epithelial
connective
muscle
nervous

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30
Q

What are the two functions of epithelial tissue?

A

provides covering

produces secretions

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31
Q

Does epithelial tissue have its own blood supply?

A

no

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32
Q

Epithelial tissue is usually arranged in

A

sheets

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33
Q

How does epithelial tissue obtain food and oxygen?

A

diffusion from nearby capillaries

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34
Q

If well nourished, epithelial tissue can

A

regenerate easily

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35
Q

Epithelial tissues are classified by

A

number of cell layers

cell shape

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36
Q

Simple epithelium contains

A

one layer of cells

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37
Q

What types of body structures would you find simple epithelium?

A

structures where absorption, secretion and filtration occur.

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38
Q

Stratified epithelium contains

A

more than one layer of cells

39
Q

What is the purpose of stratified epithelium?

A

protection

40
Q

What are the three shapes of epithelium?

A

squamous
cuboidal
columnar

41
Q

What is the function of connective tissue?

A

connect different structures of the body

42
Q

Does connective tissue have its own blood supply?

A

most of the time

43
Q

What specific type of connective tissue does not contain its own blood supply?

A

ligaments

44
Q

What are the different types of connective tissue?

A

bone
cartilage
adipose
blood vessel

45
Q

What is the function of muscle tissue?

A

producing movement

46
Q

What are the three types of muscle tissue?

A

skeletal
cardiac
smooth

47
Q

What are voluntary movements?

A

movements controlled by the brain

48
Q

skeletal muscle is under _______ control

A

voluntary

49
Q

What is involuntary control?

A

cannot be consciously controlled

50
Q

Smooth muscle is under ______ control

A

involuntary

51
Q

Where would you find smooth muscle?

A

in the walls of hollow organs such as intestines, blood vessels, bladder and uterus

52
Q

Cardiac muscle is

A

under involuntary control and only found in the heart

53
Q

What is nervous tissue?

A

provides the structure for the brain, spinal cord and nerves

54
Q

What are nerves?

A

neurons that send electrical impulses throughout the body

55
Q

What are myelin?

A

support cells that help protect nervous tissue

56
Q

What is the circulatory system?

A

cardiovascular system

57
Q

What is the circulatory system made of?

A

heart, blood vessels, and blood

58
Q

What is the function of the circulatory system?

A

circulation and distribution of various substances throughout the body

59
Q

Hormones released from the endocrine system influence

A

blood pressure

60
Q

The urinary system helps regulate

A

blood volume and pressure by adjusting urine volume

61
Q

The nervous system controls

A

blood pressure, heart rate distribution of blood throughout the body

62
Q

In women, estrogen helps

A

preserve vascular heath

63
Q

The integumentary system allows heat to escape by

A

dilating superficial blood vessels

64
Q

Blood cells are formed in

A

the marrow of the bones in the skeletal system

65
Q

The digestive system consists of

A

all the organs from the mouth to the anus involved with the breakdown of food

66
Q

What are the organs of the digestive system?

A
mouth
esophagus
stomach
small intestine
large intestine
rectum
anus
67
Q

The digestive system produces

A

enzymes

68
Q

What is the function of enzymes?

A

they break down food so that the nutrients can be easily passed into the blood for use throughout the body.

69
Q

Any food that is not digested is

A

expelled through the anus

70
Q

Where does the absorption of nutrients occur?

A

small intestine

71
Q

What are the parts of the small intestine?

A

duodenum
jejunum
ileum

72
Q

After absorption occurs, the _______ removes water that remains

A

colon

73
Q

The liver produces

A

bile that breaks down fats

74
Q

What is the function of the pancreas?

A

delivers enzymes to the small intestine that aid in digestion.

75
Q

What is the function of the endocrine system?

A

control of bodily functions

76
Q

What is the function of endocrine glands?

A

secretion of hormones that travel through the blood to the organs

77
Q

What does the integumentary system consist of?

A

skin
mucous membranes
hair
nails

78
Q

What is the function of the integumentary system?

A

protection of internal tissues from injury
waterproofing the body
temperature regulation

79
Q

What is a pathogen?

A

microorganisms capable of producing disease.

80
Q

The integumentary system serves as a barrier to

A

pathogens

81
Q

What is the relationship between the respiratory and digestive systems and the integumentary system?

A

they provide oxygen and nutrients to the skin

82
Q

What is the relationship between the cardiovascular and integumentary systems?

A

oxygen and nutrients for the skin travel through blood vessels

83
Q

What is the relationship between the lymphatic and integumentary systems?

A

lymphatic system picks up excess fluid from the skin to avoid swelling

84
Q

The skeletal system provides _______ to the integumentary system

A

shape and support

85
Q

Hormones from the _____ regulate hair growth and hydration

A

endocrine system

86
Q

The skin serves to protect

A

internal organs

87
Q

The muscular system generates heat that

A

is expelled through the skin as sweat

88
Q

The urinary system activates

A

vitamin D

89
Q

The nervous system regulates

A

the production of sweat
interprets stimuli
adjusts the diameter of blood vessels

90
Q

What does the lymphatic system consist of?

A
lymph nodes
lymph vessels
spleen
thymus
tonsils
91
Q

What is lymph?

A

a clear fluid rich in antibodies

92
Q

The lymphatic system supports the immune system by

A

housing and transporting white blood cells to and from lymph nodes

93
Q

The lymphatic system returns fluid that has leaked from the cardiovascular system

A

back into the blood vessels.

94
Q

Acidic secretions in the reproductive and integumentary systems help the lymphatic system by

A

preventing bacterial growth