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Pcat Bio > Part 1 > Flashcards

Part 1 Flashcards

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Biology 101 flashcards
1
Q

What type of tissues are there

A

Epithelial
Connective
Nervous
Muscle

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2
Q

What is the skeletal system function

A

Protection
Movement
Mineral storage
Production of blood

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3
Q

Osteoblasts

A

Responsible for bone formation and breaking it down to be reformed

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4
Q

Bone contains what? And heals better than what?

A

Contains blood vessels and heals better than cartilage, which has no blood supply and need nutrients to diffuse in.

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5
Q

Axial skeleton are composed of what ?

A

Skull, vertebral column, rib cage

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6
Q

Appendicular skeleton

A

Bones associated with appendages

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7
Q

When muscles move in different directions, how is it achieved?

A

Action of pairs of antagonistic or opposing muscles contract or relax. Requires calcium

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8
Q

Muscles are made of what

A

Bundles of muscle fibers

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9
Q

Muscle fibers are made of what?

A

Made of myofibrils

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10
Q

Myofibrils are composed of what?

A

Of two proteins: actin and myosin

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11
Q

Two types of muscles

A

Smooth and striated

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12
Q

Striated muscles includes

A

Skeletal muscle and cardiac muscle

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13
Q

Smooth muscles lines what

A

Blood vessels and gi tracts

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14
Q

Sensory functions

A

Sending and processing sensory info (hearing, seeing, touch)0

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15
Q

Acetylcholine

A

A neurotransmitter, binds to acetylcholine receptor on receiving cell

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16
Q

Action potential, what happens to cell?

A

Changes in ionic/charge state

  • cell changes from resting of -70 millivolts to becoming positively charged.
  • ionic conditions also reverse with NA going in and K going out. Neuron then returns to its normal state of high k and low NA.
17
Q

Meninges

A

Covering cns. Surrounds the brain and the spinal cord

18
Q

Autonomic nervous system

A

Involuntary functions, involves skeletal muscle

19
Q

Parasympathetic system

A

Slows things down

20
Q

Reflexes process

A

Involve sensory formation which isnt processed by the brain and can have a faster response. It occurs in the region of the spinal cord

21
Q

Cerebrum

A

Function are processing of sensory info and memory

22
Q

Cerebellum

A

Receives info from muscles and sensory receptors, controls balance and coordinated movement.

23
Q

Light goes through

A

Cornea — lens— iris.

24
Q

Brain stem

A

Controls many autonomic function

25
Q

Iris controls?

A

Amount of light passing through the lens

Pcat Bio (4 decks)

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