BIOS 252 COMP EXAM
____ cells are found in the urinary bladder, renal pelvis, and ureters?
A. Simple squamous epithelial
B. Stratified columnar epithelial
C. Transitional epithelial
D. Stratified squamous epithelial
E. Stratified cuboidal epithelial - ANS-C. Transitional epithelial
_______ cells function as immune/phagocytic cells within the central nervous system
A. Ependymal
B. Astrocytes
C. Microglial
D. Schwann
E. Oligodendrogital - ANS-C. Microglial
_________ is the summation of postsynaptic potentials in response to stimuli that occur at
different locations in the membrane of a postsynaptic cell at the same time
A. Cortical summation
B. Spatial summation
C. Temporal summation
D. Tactile summation
E. Olfactory summation - ANS-B. Spatial summation
A molecule that freely disassociates with water resulting in a low pH solution, best describes a
____ molecule
A. Acid
B. Base
C. Neutral
D. Ionic
E. Covalent - ANS-A. Acid
A movement in which you decrease the angle of the joint best describes which range of motion
A. Flexion
B. Extension
C. Hyperextension
D. Abduction
E. Adduction - ANS-A. Flexion
A muscle that provides the major force of producing a specific movement is called
, A. An antagonist
B. An agonist
C. A synergist
D. A fixation
E. A sidekick - ANS-B. An agonist
An inhibitory neurotransmitter ________ the postsynaptic membrane
A. Depolarizers
B. Repolarizes
C. Hyperpolarizes
D. Reverses the polarity of the
E. Moves channels to the internal axonal membrane - ANS-C. hyperpolarizes
During active muscle contraction, the myosin heads will bind to which protein?
A. Dystrophin
B. Actin
C. Titan
D. Troponin
E. Tropomyosin - ANS-B. Actin
During inhalation, ________ muscles contract to elevate the ribs. During forced exhalation,
_______ muscles contract to depress the ribs
A. External intercostals ; internal intercostals
B. Transverse abdominis ; diaphragm
C. Diaphragm ; transverse abdominis
D. Internal intercostals ; external intercostals
E. Rectus abdominis ; external obliques - ANS-A. External intercostals ; internal intercostals
EPSPs (excitatory postsynaptic potentials) occur when
A. More potassium ions than usual leak out of a cell
B. More calcium ions then usual leak out of a cell
C. Chloride ions enter the cell
D. Sodium channels are opened and sodium enters the cell
E. Sodium channels are opened and sodium flows out of the cell - ANS-D. Sodium channels are
opened and sodium enters the cell
How many chromosome pairs do the nuclei of human somatic cells contain?
A. 23
B. 46
C. 13
D. 3
E. 28 - ANS-A. 23
In an isometric contraction, the ,uncle develops tension but does not?
____ cells are found in the urinary bladder, renal pelvis, and ureters?
A. Simple squamous epithelial
B. Stratified columnar epithelial
C. Transitional epithelial
D. Stratified squamous epithelial
E. Stratified cuboidal epithelial - ANS-C. Transitional epithelial
_______ cells function as immune/phagocytic cells within the central nervous system
A. Ependymal
B. Astrocytes
C. Microglial
D. Schwann
E. Oligodendrogital - ANS-C. Microglial
_________ is the summation of postsynaptic potentials in response to stimuli that occur at
different locations in the membrane of a postsynaptic cell at the same time
A. Cortical summation
B. Spatial summation
C. Temporal summation
D. Tactile summation
E. Olfactory summation - ANS-B. Spatial summation
A molecule that freely disassociates with water resulting in a low pH solution, best describes a
____ molecule
A. Acid
B. Base
C. Neutral
D. Ionic
E. Covalent - ANS-A. Acid
A movement in which you decrease the angle of the joint best describes which range of motion
A. Flexion
B. Extension
C. Hyperextension
D. Abduction
E. Adduction - ANS-A. Flexion
A muscle that provides the major force of producing a specific movement is called
, A. An antagonist
B. An agonist
C. A synergist
D. A fixation
E. A sidekick - ANS-B. An agonist
An inhibitory neurotransmitter ________ the postsynaptic membrane
A. Depolarizers
B. Repolarizes
C. Hyperpolarizes
D. Reverses the polarity of the
E. Moves channels to the internal axonal membrane - ANS-C. hyperpolarizes
During active muscle contraction, the myosin heads will bind to which protein?
A. Dystrophin
B. Actin
C. Titan
D. Troponin
E. Tropomyosin - ANS-B. Actin
During inhalation, ________ muscles contract to elevate the ribs. During forced exhalation,
_______ muscles contract to depress the ribs
A. External intercostals ; internal intercostals
B. Transverse abdominis ; diaphragm
C. Diaphragm ; transverse abdominis
D. Internal intercostals ; external intercostals
E. Rectus abdominis ; external obliques - ANS-A. External intercostals ; internal intercostals
EPSPs (excitatory postsynaptic potentials) occur when
A. More potassium ions than usual leak out of a cell
B. More calcium ions then usual leak out of a cell
C. Chloride ions enter the cell
D. Sodium channels are opened and sodium enters the cell
E. Sodium channels are opened and sodium flows out of the cell - ANS-D. Sodium channels are
opened and sodium enters the cell
How many chromosome pairs do the nuclei of human somatic cells contain?
A. 23
B. 46
C. 13
D. 3
E. 28 - ANS-A. 23
In an isometric contraction, the ,uncle develops tension but does not?
