Myelinated - Answers myelin is an insulating layer, which conducts signals through the axon at a
much faster speed
EPSPs - Answers are graded potentials that can initiate an AP in the axon, produce a graded
potential that lessens the chance of an AP in an axon. - small depolarization is created
IPSPs - Answers produce a graded potential that lessens the chance of an AP in an axon. - small
hyperpolarization is created.
Clusters of RER and free ribosomes in neurons are called - Answers nissl bodies
At the normal resting potential of a neuron, its Na K ion exchange pump transports - Answers 3
intracellular sodium ions for 2 extracellular potassium ions
The site in the neuron where EPSPs and IPSBs are most commonly integrated is - Answers the
axon hilcock
Spatial Summation- - Answers 2 synapses required to induce EPSPs
EPSP - Answers excitatory postsynaptic potential
IPSP - Answers inhibitory postsynaptic potential
If the sodium potassium pump in the plasma membrane fails, something that would NOT
happen would be - Answers rise in intracellular Potassium K ions
Ventral Root of spinal nerve contains - Answers cell bodies of motor neuron
Afferent- - Answers sensory neurons that carry nerve impulses from sensory stimuli towards the
central nervous system and brain
Sensory - Answers Afferent
efferent neurons - Answers are motor neurons that carry neural impulses away from the central
nervous system and towards muscles to cause movement
Motor - Answers Efferent
Cross Extensor Reflex compliments the flexor reflex by - Answers activating contralateral
muscles
Spinal Tap- needle is punctured through - Answers subarachnoid space
Loss of feeling in lower body is an indicator that the ________ part of the spinal cord is
compressed - Answers Ascending Tracts
,In adults, the Babinski Reflex suggests injury of ___________ - Answers Descending Nerve Tracts
Floor of Diencephalon - Answers Hypothalamus
Abduct - Answers contraction moves limb away from midline
Adduct - Answers contraction moves limb toward midline
4 Elements of Life - Answers Carbon, Oxygen, Nitrogen, Hydrogen
Meiosis 1 - Answers begins with a diploid cell and ends with 2 cells having the haploid number
of chromosomes
Meiosis II - Answers Each of the two haploid cells divides, net result of 4 haploid gametes
Haploid - Answers having a single set of unpaired chromosomes
Diploid - Answers containing two complete sets of chromosomes, one from each parent.
Mandibule Nerve - Answers Cranial nerve 5
Absorptions in the arachnoid granulations returns CSF to thr - Answers venous circulation
Cranial Nerves that innervate eye muscles - Answers 3, 4, 6
The inferior colliculus (IC) - Answers is the principal midbrain nucleus of the auditory pathway
and receives input from several peripheral brainstem nuclei in the auditory pathway
Reticulospinal tract - Answers does not contain sensory tracts in spinal cord
Injury to the neurons of collateral ganglion affect function of - Answers sweat glands
Cutaneous - Answers Organs-Skin, hair, nails, sweat and oil glands
Functions:
Protect body
Regulate temperature
Eliminates wastes (sweat)
Makes Vitamin D
Detect sensations
Skeletal - Answers Organs-bones and joints
Functions:
, Support body
Protect body
Surface attachment for muscles
Body movement
Produces blood cells
Stores minerals and lipids
Muscle - Answers Organs- Skeletal muscles
Functions:
Body movement
Produces heat
Nervous - Answers Organs- Brain, spinal cord, nerves, special sense organs (eyes ect.)
Functions:
Regulates all body activities
Detects changes in external and internal environments
Metabolism - Answers Sum of all the chemical reactions in the body
Catabolic - Answers Breaking down (digestion of food, bone)
Anabolic - Answers Building up (build muscle, bone)
Intracellular Fluid - Answers Fluid within cells
Positive Feedback - Answers Strengths the change in a controlled condition (child birth)
Negative Feedback - Answers Reverses the change in a controlled condition (regulation of blood
pressure)
Dorsal Cavity - Answers -Cranial cavity
-Spinal cavity
Ventral Cavity - Answers -Thoracic cavity
-Abdominopelvic cavity
-Separated by diaphragm