BIO 112 ECPI Exam 3 - Questions With Verified
Solutions
Ankle Joint Movement Right Ans - Plantar flexion-flexing downwards
Dorsal flexion-flexing upwards
Hemispheres of the brain Right Ans - Left cerebral hemi
Right cerebral hemi
Corpus Callosum Right Ans - connects the two hemispheres
Cerebrum Right Ans - covering of the brain
Brainstem Right Ans - pons
medulla
midbrain
Has ridges or convulsions Right Ans - Gyri
When one neuron receives impulses to several neurons Right Ans -
conversions
High energy in a muscle twitching is Right Ans - a sign of a lot of
mitochondria
Repolarization Right Ans - membrane potential of a neuron returning to its
resting negative state. Sodium exits and potassium comes in
Refractory period Right Ans - period following stimulation during which a
neuron or muscle fiber won't respond to another threshold stimulus
Depolarization Right Ans - membrane of a neuron becoming less negative
than the resting potential. Sodium rushes in
threshold potential Right Ans - level of potential at which an action
potential is triggered in a neuron or a muscle fiber
made by oligodendrocytes Right Ans - that's how the CNS form myelin
, Myelin Right Ans - lipid material that forms a sheath like covering around
axons; insulates
cells in nervous system Right Ans - neurons and neuroglia
glial cells that form myelin sheath around the axons of peripheral neurons
Right Ans - Schwan cells
myelin helps with Right Ans - faster impulses
3 types of joints Right Ans - fibrous-syndesmoses, sutures, gomphoses
synovial-most joints are these
cartilaginous-synchondroses, symphyses
How many cranial nerves? Right Ans - 24
Olfactory nerve Right Ans - I, sensory, smell
Optic nerve Right Ans - II, sensory, ability to see
Oculomotor nerve Right Ans - III, motor, move and blink your eyes
Trochlear nerves Right Ans - IV, motor, move eyes up and down and back
and forth
Trigeminal nerves Right Ans - V, mixed, face and cheeks, taste and jaw
movement, sensation
Abducen nerve Right Ans - VI, motor, move your eyes
Facial nerve Right Ans - VII, mixed, facial expression and sense of taste
Auditory/vestibular nerve Right Ans - mixed, VIII, sense of hearing and
balance
Glossopharyngeal Right Ans - IX, mixed, ability to taste and swallow
Solutions
Ankle Joint Movement Right Ans - Plantar flexion-flexing downwards
Dorsal flexion-flexing upwards
Hemispheres of the brain Right Ans - Left cerebral hemi
Right cerebral hemi
Corpus Callosum Right Ans - connects the two hemispheres
Cerebrum Right Ans - covering of the brain
Brainstem Right Ans - pons
medulla
midbrain
Has ridges or convulsions Right Ans - Gyri
When one neuron receives impulses to several neurons Right Ans -
conversions
High energy in a muscle twitching is Right Ans - a sign of a lot of
mitochondria
Repolarization Right Ans - membrane potential of a neuron returning to its
resting negative state. Sodium exits and potassium comes in
Refractory period Right Ans - period following stimulation during which a
neuron or muscle fiber won't respond to another threshold stimulus
Depolarization Right Ans - membrane of a neuron becoming less negative
than the resting potential. Sodium rushes in
threshold potential Right Ans - level of potential at which an action
potential is triggered in a neuron or a muscle fiber
made by oligodendrocytes Right Ans - that's how the CNS form myelin
, Myelin Right Ans - lipid material that forms a sheath like covering around
axons; insulates
cells in nervous system Right Ans - neurons and neuroglia
glial cells that form myelin sheath around the axons of peripheral neurons
Right Ans - Schwan cells
myelin helps with Right Ans - faster impulses
3 types of joints Right Ans - fibrous-syndesmoses, sutures, gomphoses
synovial-most joints are these
cartilaginous-synchondroses, symphyses
How many cranial nerves? Right Ans - 24
Olfactory nerve Right Ans - I, sensory, smell
Optic nerve Right Ans - II, sensory, ability to see
Oculomotor nerve Right Ans - III, motor, move and blink your eyes
Trochlear nerves Right Ans - IV, motor, move eyes up and down and back
and forth
Trigeminal nerves Right Ans - V, mixed, face and cheeks, taste and jaw
movement, sensation
Abducen nerve Right Ans - VI, motor, move your eyes
Facial nerve Right Ans - VII, mixed, facial expression and sense of taste
Auditory/vestibular nerve Right Ans - mixed, VIII, sense of hearing and
balance
Glossopharyngeal Right Ans - IX, mixed, ability to taste and swallow
