The organism to the right belongs to the phylum: A.Reptilia
B.Mammalia C.Amphibia D.Chordata E.Arthropoda
Slide 5
The principal components of viruses are: 1.Protein and lipid
2.DNA and RNA 3.RNA and lipid 4.DNA and carbohydrate 5.protein and
nucleic acid
Slide 6
Animal Evolution Monophyletic Common ancestor Colonial
Flagellate Hypothesis All animals descended from a colony of hollow
spherical cells
Slide 7
Animal Classification 1.Tissue organization May be made of
cells, tissues or organs 3 GERM LAYERS Endoderm Mesoderm Ectoderm
DIPLOBLASTIC just endo & ectoderm; have tissues only (no
organs) TRIPLOBLASTIC all three; have organs
Animal Classification 3.Body Plan Sac plan One opening for food
to enter and exit Tube w/in a tube Mouth and anus Allows for
specialization along digestive tract
Slide 10
Animal Classification 4.Type of Coelom Acoelomates No body
cavity or coelum (tube) Psuedocoelomates Body cavity incompletely
lined by mesoderm Coelomates Body cavity completely lined by
mesoderm
Slide 11
Animal Classification PROTOSOMES First embryonic opening
(blastopore) becomes the mouth of the organism DEUTEROSOMES First
embryonic opening becomes the anus
Slide 12
Animal Classification 5.Segmentation Evolutionary Advantage of
Segmentation?
Slide 13
And finally 6.Molecular Data Closely related organisms should
have a similar nucleotide sequence
Connective Tissue Many shapes and sizes, but all have:
Specialized cells Ground substance Non-cellular stuff that
separates the cells Solid, liquid or gel Protein fibers
Muscle Cells with actin and myosin filaments that allow for
movement 3 types SKELETAL SMOOTH CARDIAC
Slide 23
Nervous Tissue Functions in sensing, interpreting, and
responding to stimuli NEURON NEUROGLIAL CELL support and nourishes
neurons
Slide 24
Organ Systems & Homeostasis
Slide 25
The Skin as an Organ How is the skin adapted in each of the
following organisms?
Slide 26
Skin as an Organ Skin has many layers Epidermis Outer
protective layer Dermis Contains receptors and blood supply
Subcutaneous Fat layer Blood supply
Slide 27
Body Cavities Various body cavities contain different organs
Ventral (belly) cavity of human develops from coelom
Slide 28
Homeostasis Give an example of how each system helps the body
maintain homeostasis. RespiratoryDigestive
CardiovascularCirculatory Skeletal Muscular
Slide 29
Slide 30
Negative Feedback Sensor becomes active when a change is
detected Signals control center which then fixes the problem
Examples?
Slide 31
Positive Feedback Stimulus causes a greater change in the same
direction Example: Pressure of the babys head pushes on cervix
Stimulates release of oxcytocin Oxcytocin stimulates contraction of
uterus and more pressure
Slide 32
Critiquing a research paper which form of feedback? 1.Negative
2.Positive
Slide 33
Which of the following best describes the set point of a
homeostatic system? A.The cells that collect and transmit
information about the state of the system. B.The cells that receive
information about the state of the system and that direct changes
to the system. C.The various components that produce appropriate
changes in the system. D.The target or normal value of the
parameter in question. 0 of 30