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42 Cards in this Set
- Front
- Back
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Where does RNA exit the nucleus?
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Nuclear Pores
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Where are ribosomal RNA (rRNA) and the subunits of the ribosome transcribed?
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Nucleolus
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Where are most of the phospholipids of the cell membrane formed?
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At the SER
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Where do lysosomes come from?
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The Golgi Apparatus
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The two major types of filaments in the cytoskeleton are what?
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Microtubules and microfilaments
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What protein is used to make microtubules?
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Tubulin
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Flagella, cilia, and the spindle apparatus are all made from what?
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Microtubules
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Eukaryotic flagella are made from a ____ microtubule configuration.
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9+2
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Cross bridges made from a protein called ____ connect each of the outer pairs of microtubules to their neighbor.
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dynein
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The major microtubule organizing center in animal cells is the ____.
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Centrosome
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____ epithelium is one layer thick.
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Simple
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____ epithelium is two or more layers thick.
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Stratified
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What eukaryotic organelle is frequently seen as one that detoxifies harmful substances?
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SER
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____ communication tends to be rapid, direct and specific.
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Neuronal
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____ communication tends to be slower, spread throughout the body, and affects many cells in many different ways.
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Hormonal
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The functional unit of the nervous system is called the ____.
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Neuron
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The neuron is so highly specialized that it has lost the capacity to ____.
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Divide
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The neuron depends almost entirely on ____ for its chemical energy.
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Glucose
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Where does an action potential originate?
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The axon hillock
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Oligodenrocytes wrap many times around axons in the CNS creating electrically insulating sheaths called what?
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myelin
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In the peripheral nervous system, myelin is produced by what?
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Schwann Cells
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Tiny gaps between myelin are called ____.
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Nodes of Ranvier
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White matter in the brain and spinal cord appear white because?
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There are a large amount of myelinated axons
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The jumping of an action potential from one node of Ranvier to the next is known as what?
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Saltatory Conduction
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____ neurons receive signals from a receptor cell that interacts with its environment.
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Sensory
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____ neurons transfer signal from neuron to neuron.
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Interneurons
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____ neurons carry signals to a muscle gland called the effector
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Motor
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The neurotransmitter used by all preganglionic neurons in the ANS and by postganglionic neurons in the parasympathetic system is?
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Acetylcholine
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The postganglionic neurons of the sympathetic nervous system use what neurotransmitter at the post-ganglionic synapse?
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Epinephrine or Norepinephrine
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Autonomic pathways are controlled by what section of the brain?
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The hypothalamus
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The medulla, hypothalamus, thalamus, cerebellum are make up what part of the brain?
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The lower brain
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The cerebrum and cerebral cortex make up what part of the brain?
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The higher brain
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Where does light first strike the eye?
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The cornea
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The lens of the eye is flattened due to what?
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Ciliary muscles
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The ____ contains light sensitive cells called rods and cones.
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retina
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Between rod cells and cone cells, which distinguishes color?
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Cone cells
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The colored portion of the eye that creates the opening called the pupil is called the what?
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Iris
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The middle ear begins with what?
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The tympanic membrane
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The three small bones: malleus, incus, and the stapes are located where?
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The middle ear
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What part of the ear detects sound?
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The cochlea
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The ____ ____ of the ear detect orientation and movement of the head.
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The semicircular canals
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Hair cells of the ____ detect movement of the vestibular membrane and transuce sound into neural signals.
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Organ of corti
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