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BIOL Exam 3 Vocab
Vocab
32
Biology
Undergraduate 2
11/17/2012

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Term
Define the following:

1. ecdysis
2. metamerism
3. tagma
Definition
1. molting of the exoskeleton
2. segmentation
3. body unit made up of multiple fused body segments (head, thorax, abdomen)
Term
Define the following:

1. cephalothorax
2. ectoparasite
3. biramous
4. uniramous
Definition
1. fused head/thorax (Chelicerata)
ex. Horseshoe crabs, spiders, ticks
2. parasite that lives on the surface of an organism (Acari)
ex. dust mites
3. two pairs of appendages (Crustacea)
4. single series of appendages
Term
Define the following:

1. Antennal Gland
2. Malphigian Tubule
3. Diapause
Definition
1. excretory organ used for communication (Crusatcea)
2. excretory organ (Hexapoda/Insecta)
3. period of dormancy triggered by signals before adverse conditions arrive (butterflies)
Term
Define the following:

1. Direct Development
2. Indirect Development
3. Complete Metamorphism
4. Incomplete Metamorphism
Definition
1. no metamorphosis or larval stage
2. metamorphosis
3. pronounced transition from larva to adult
ex. butterflies
4. less dramatic transition (young=nymph)
ex. grasshoppers
Term
Define the following:

1. Gall
2. Phytophagous
3. Saprophagous
Definition
1. flies deposit eggs in plant tissue, outgrowth of plant tissue, houses and feeds larva
2. herbivorous
3. scavengers
Term
Define the following:

1. Pentamerously radial
2. aboral/oral
3. ossicles
Definition
1. body can be divided into five parts
2. side without mouth/side with mouth
3. calcareous plates that make up endoskeleton
Term
Define the following:

1. pedicellariae
2. papulae
Definition
1. tiny jaws that keep surface clean
2. skin gills that lie between ossicles used for respiration and secretion
Term
Define the following:

1. water vascular system
2. madreporite
3. ampulla
4. tube feet
Definition
1. hydraulic locomotion system
2. structure where water enters for WVS
3. bulb structure that stores water that enters the WVS
4. external fluid filled muscular tubes used for motion
Term
Define the following:

1. Notochord
2. Tunic
Definition
1. semirigid skeletal rod usually extending the length of the body and provides embryo with support
2. tough, nonliving covering of tunicates
Term
Define the following:

1. Agnatha
2. Gnathostomata
3. Pisces
4. Tetrapod
Definition
1. jawless (hagfish, lampreys)
2. jaw (sharks, amphibians, birds, mammals)
3. fish
4. legs/wings (including snakes)
Term
Define the following:

1. Amniote
2. Anamniote
3. Andromous
4. Catadromous
Definition
1. amniotic membranes (reptiles, birds, mammals)
2. no membrane (all fish and amphibs)
3. ascend freshwater, spawn and die (salmon)
4. migrate downstream into ocean (eels)
Term
Define the following:

1. Placoid scale
2. Ganoid
3. Cycloid or Ctenoid
Definition
1. spiny scales like teeth (sharks)
2. diamond shape (gar)
3. scales on typical fish (bass)
Term
Define the following:

1. Teleosts
2. Nonteleosts
Definition
1. ctenoid (typical fish)
2. ganoid scales (gar)
Term
Define the following:

1. Rectal gland
2. Lateral line
3. Operculum
4. Ampullary organs
Definition
1. secretes urea and excess salt
2. canal system on sides and head; receptors sensitive to vibrations and current
3. gill cover
4. receptors on head senstive to electrical fields
Term
Define the following:

1. Oviparous
2. Ovoviviparous
3. viviparous
Definition
1. egg laying
2. egg retained until birth
3. live birth, placental nourishment
Term
Define the following:

1. Neuron
2. Afferent
3. Efferent
4. Interneurons
Definition
1. functional unti of nervous system
2. sensory neurons, sends impulses to receptors to CNS
3. motor neurons, sends impulses from CNS
4. connect afferent and efferent neurons
Term
Define the following:

1. Neuroglia cell
2. Schwann cell
3. astrocytes
4. ganglia
Definition
1. support neurons
2. lay down insulation myelin sheath around axons
3. store and provide nutrients and ions
4. bundles of neuron cell bodies that lie outside of CNS
Term
Define the following:

1. All or none
2. resting potential
3. action potential
Definition
1. all impulses identical; frequency=strength
2. overall net negative charge inside axon because Na is pumped out and K pumped in but some K leaks out leaving a net negative charge
3. axon membrane becomes permeable to Na which rushes in, producing a wave of depolarization down length of axon
Term
Define the following:

1. Node of Ranvier
2. synapse
Definition
1. connections between sheathed region where action potential jumps from node to node, increases speed of impulse
2. gap between neurons
Term
Define the following:

1. neurotransmitter
2. reflex arc
Definition
1. molecule in vesicles at the end of neurons
ex. acetylcholine
2. impulse that travels from sensory nerve to motor nerve via spinal cord bypassing the brain to an effector causing a rapid, involuntary reflex act
Term
Define the following:

1. Medulla
2. Cerebellum
3. Pons
Definition
Hindbrain
1. controls heart rate, breathing, blood vessel diameter
2. controls equilibrium, posture, movement
3. communication with cerebellum
Term
Define the following:

1. CNS
2. Peripheral NS
3. Somatic NS
4. Autonomic NS
Definition
1. brain and spinal cord
2. outside CNS
3. innervates skeletal muscles (voluntary)
4. innervates smooth muscle (involuntary)
Term
Define the following:

1. Parasympatheic system
2. Sympathetic
Definition
1. controls resting responses
-eating, drinking, urination
2. controls physical activity (fight or flight responses)
-heart and metabolic rate, dialation of skeletal blood vessels, decreased GI activity
Term
Define the following:

1. pheromone
2. cochlea
Definition
1. organic compound released to elicit a physiological or behavioral response from another individual (ants)
2. snail like structure of the inner ear with fluid filled parts that contain small hairs
Term
Define the following:

1. Saccule and Utricle
2. Semicircular canal
3. Rods
4. Cones
Definition
1. used for static balance as stony particles stimulate hairs they rest on
2. rotational acceleration as fluid movement in three canals stimulates hairs as body moves and turns
3. majority of photo receptors, colorless vision in dim light, concentrated at retina's periphery
4. fewer than 1 million, provides color vision in stronger light, concentrated in retina's center
Term
Define the following:

1. Ectothermic
2. Poikilothermic
3. Paedomorphosis
Definition
1. Cold blooded; regulates body heat by exchanging heat with its surroundings
2. temperature varies greatly
3. retention of juvenile or larval traits later in life
Term
Define the following:

1. Serous gland
2. Chromatophore
3. Amplexus
Definition
1. in skin of amphibians, contains toxins for defense
2. branched cells; pigment concentrated or spread out to change color
3. male grasps female and fertilizes eggs as they are laid
Term
Define the following:

1. Hormone
2. Endocrine gland
3. Exocrine gland
Definition
1. chemical messenger produced in small quantities, carried to blood
2. ductless, secrete hormones into blood,; more far reaching effect
ex. pituitary, adrenals
3. secrete via ducts but not hormones; effect is localized
ex. sweat, scent, salivary
Term
Define the following:

1. Tropic Hormone
2. Membrane receptor
3. Nuclear receptor
Definition
1. stimulates endocrine gland to secrete another hormone
2. plasma proteins that first messengers bind to
3. receptor inside nucleus that turns on genes to produce enzymes and catalyze reactions
Term
Define the following:

1. Positive feedback
2. Negative feedback
Definition
1. usual; hormones effect is monitored and then shut down
2. rare; hormones effect reinforced until event outside system shuts it down
ex. oxytocin and labor contractions
Term
Define the following:

1. Cretinism
2. Goiter
Definition
1. under secretion of Thyroid-stimulating hormone (TSH); causes retardation
2. enlargement of the thyroid due to iodine deficiency
Term
Define the following:

1. Hypothalmus
2. Cerebrum
3. Thalamus
Definition
Forebrain
1. homeostatic control of hunger, thirst, body temp; emotions, circadian rhythm
2. higher mental activities
3. analyze and relay sensory info to cerebrum; knowledge

Midbrain- relay visual and sound stimuli
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