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ZOOLOGY > LESSON 4 > Flashcards

LESSON 4 Flashcards

1
Q

anatomical position of the body parts

A

anterior
posterior
dorsal
ventral

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2
Q
  • Near to the head
A

Anterior

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3
Q
  • Near to the tail
A

Posterior (Caudal)

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4
Q
  • Near to the back
A

Dorsal

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5
Q
  • Near to the belly
A

Ventral

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6
Q

different anatomical planes

A

sagittal plane
coronal plane
transverse plane

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7
Q
  • anatomical plane that divides the body into left and right halves
A

Sagittal plane

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8
Q

anatomical plane that divides the body into anterior (front) and posterior (back) portions

A

Coronal plane -

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9
Q
  • horizontal plane or axial plane, is an anatomical plane that divides the body into superior (upper) and inferior (lower) portions
A

Transverse plane

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10
Q

Transverse plane - horizontal plane or axial plane, is an anatomical plane that divides the body into _______ and ________ portions

A

superior (upper)
inferior (lower)

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11
Q

______ - refer to the overall structural organization and arrangement of body parts

A

Body plans

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12
Q

3 different body plans

A

asymmetric body plan
radial symmetry body plan
bilateral symmetry body plan

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13
Q

Animals whose body does not follow specific pattern or symmetry

A

asymmetric body plan

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14
Q

Lack of any symmetry, where there is no way to divide the body into identical halves.

A

asymmetric body plan

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15
Q

Have body parts that are arranged around a central axis

A

radial symmetric body plan

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16
Q

Their body can be divided into similar halves by multiple planes that pass through their central axis

A

radial symmetric body plan

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17
Q

an organism can be divided into two mirror- image halves along a single plane, known as the sagittal plane

A

bilateral symmetric body plan

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18
Q

This plane runs from the front (anterior) to the back (posterior) of the organism, dividing it into left and right halves.

A

bilateral symmetric body plan

19
Q
  • a fluid-filled body cavity located between the digestive tract and the outer body wall in many animals.
A

Coelom

20
Q

It serves several important functions and varies in its formation and structure among different animal groups

A

coelom

21
Q

An ______ is an animal that does not possess a body cavity.

A

acoelomate

22
Q

Acoelomates have a _______ body plan, meaning that their tissues and organs develop from three primary embryonic cell (germ cell) layers.

A

triploblastic

23
Q

A ______ is an organism with body cavity that is not derived from the mesoderm, as in a true coelom, or body cavity.

A

pseudocoelomate

24
Q

A pseudocoelomate is also known as a ________, as the body cavity is derived from the blastocoel, or cavity within the embryo.

A

blastocoelomate

25
Q

The rest of ______ possess a true _______, a fluid-filled body cavity completely lined by mesoderm

A

bilaterians
coelom

26
Q

functions of coelomates

A

Support and Structure:
Organ System Development: .
Circulation:

27
Q

The coelom Provides a ____________ for many invertebrates.

A

hydrostatic skeleton

28
Q

Coelom Allows for the _______ and ______ of internal organs.

A

development
suspension

29
Q

Coelom Facilitates the circulation of ______ and ________.

A

fluids
nutrients

30
Q
  • three primary layers that are
    formed in the earliest stage of embryonic
    development
A

Germ layers

31
Q

3 germ layers

A

ectoderm
mesoderm
endoderm

32
Q

the outermost of the three germ layers

A

ectoderm

33
Q

the epithelia (surface, or lining, tissues) of sense organs

A

ectoderm

34
Q

the nasal cavity, the sinuses, the mouth (including tooth enamel)

A

ectoderm

35
Q

the anal canal

A

ectoderm

36
Q

nervous tissue, including the pituitary body and chromaffin tissue (clumps of endocrine cells)

A

ectoderm

37
Q

the middle of the three germ layers, or masses of cells.

A

mesoderm

38
Q

It gives rise to muscle, connective tissue, cartilage, bone, notochord, blood, bone marrow, lymphoid tissue, and to the epithelia (surface, or lining, tissues) of blood vessels, lymphatic vessels, body cavities, kidneys, ureters, gonads (sex organs), genital ducts, adrenal cortex, and certain other tissues.

A

mesoderm

39
Q

: the innermost of the three germ layers, or masses of cells

A

Endoderm

40
Q

It gives rise to the epithelium (tissue that covers, or lines, a structure) of the pharynx, including the eustachian tube, the tonsils, the thyroid gland, parathyroid glands, and thymus gland; the larynx, trachea, and lungs; the gastrointestinal tract (except mouth and anus), the urinary bladder, the vagina (in females), and the urethra.

A

endoderm

41
Q

nervous tissue
epidermis cells
pigment cells

A

ectoderm

42
Q

muscle cells
skeleton
heart, kidney, blood

A

mesoderm

43
Q

endocrine glands
lungs
gastrointestinal tract

A

endoderm

ZOOLOGY (7 decks)

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