body structure Flashcards

1
Q

chromatin

A

structural component of the nucleus ,composed of nucleic acids and proteins

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2
Q

chromosome

A

Threadlike structures within the nucleus composed of deoxyribonucleic acid (DNA) that carries hereditary information encoded in genes.

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3
Q

deoxyribonucleic acid (DNA)

A

molecule that holds genetic information capable of replicating and producing an exact copy whenever the cell divides

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4
Q

diaphragm

A

muscular wall that divides the thoracic cavity from the abdominopelvic cavity

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5
Q

metabolism

A

sum f all physical and chemical changes that tak place in a cell or an organism

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6
Q

organelle

A

cellular structure that provides a specialized function, such as the nucleus (reproduction), ribosomes (protein synthesis), Golgi apparatus (removal of material from the cell), and lysosomes (digestion

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7
Q

3 main parts of a cell

A

membrane, cytoplasm, and the nucleus

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8
Q

study of the body at the cellular level is called

A

cytlogy

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9
Q

Inside the cytoplasm are specialized structures called

A

organelles

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10
Q

organelles perform specific functions of the cell such as

A

reproduction and movement

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11
Q

the largest cell organelle is the

A

nucleus

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12
Q

the nucleus direct the cells

A

activities and contains chromosomes

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13
Q

the nucleus is responsible for

A

metabolism, growth & reproduction. it also carries the genetic blueprint of the organism.

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14
Q

The nucleus blueprint is found in a complex molecule called

A

deoxyribonucleic acid (DNA)

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15
Q

deoxyribonucleic acid (DNA) is organized into a threadlike structure called

A

chromatin

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16
Q

when the cell is ready to divide, chromatin forms

A

chromosomes

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17
Q

Groups of cells that perform a specialized activity are called

A

tissues

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18
Q

the study of tissues is called

A

histology

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19
Q

More than 200 cell types compose four major tissues of the body

A

Epithelial, Connective Muscle & Nervous

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20
Q

Epithelial tissue

A

cover surfaces of organs, lines cavities and canal, forms tubes and ducts provides the secreting portions of glands, and makes up the epidermis of the skin. It is composed of ells arranged in a continuous sheet consisting of one or more layers.

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21
Q

Connective tissue

A

supports and connects other tissues and organs. It is made up of diverse cell types, including fibroblasts, fat cells, and blood

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22
Q

Muscle tissue

A

provides the contractile tissue of the body, which is responsible for movement

23
Q

Nervous System

A

transmits electrical impulses as I relays information throughout the entire body

24
Q

Organs

A

are body structures that perform specialized functions. They are composed of two or more tissue types.

25
A body system is composed of
varying numbers of organs and accessory structures that have similar or related functions
26
The highest level of organization is the
organism
27
An organism is
a complete living entity capable of independent existence
28
The anatomical position is a
body posture used to locate anatomical parts or divisions
29
In the anatomical position
the body is standing erect and the face forward, arms to the sides and palms forward
30
A plane
is an imaginary flat surface that divides the body into two sections
31
the most commonly used planes are
midsagittal (median), coronal (frontal) and transverse (horizontal)
32
Body cavities
are spaces within the body tht hep protect, separate, an support internal organs.
33
The two major cavities consist of
dorsal (posterior) and ventral (anterior)
34
dorsal (posterior)
including the cranial ad spinal cavities
35
ventral (anterior)
including the thoracic an abdominopelvic cavities
36
Planes of the body
Midsagittal (median),coronal (frontal) and transverse (horizontal)
37
Midsagittal (median)
right and left halves
38
Coronal (frontal)
Anterior (ventral) and posterior (dorsal) aspects
39
Transverse (horizontal)
Superior (upper and inferior (lower) aspects
40
to describe the location of the many abdominal and pelvic organs more easily anatomists and clinicians use two methods of dividing the abdominopelvic cavity into smaller areas
These two divisions are: quadrants and regions
41
The abdominopelvic cabity is divided into
four quadrants with two imaginary lines that form a cross in the midsection of the lower torso
42
RUQ
right upper
43
LUQ
left upper
44
RLQ
right lower
45
LLQ
left lower
46
Right hypochondriac
upper right lateral region beneath the ribs
47
Epigastric
Upper middle region
48
Left hypochondriac
upper left lateral region beneath the ribs
49
Right lumbar
middle right lateral region
50
Umbilical
region of the naval
51
Left lumbar
middleleft lateral region
52
Right inguinal (iliac)
lower right lateral region
53
Hypogastric
lower middle region
54
Left inguinal (iliac)
lower left lateral region