BIOS 252 COMPREHENSIVE EXAM NEWEST 2024
ACTUAL EXAM |WITH QUESTIONS AND CORRECT
DETAILED ANSWERS |PRE-EVALUATED A+
When compared to a classic lever system, the synovial joins our musculoskeletal system play the role of
the______. - ANSWER------>fulcrum
Which of the following events will occur when depolarizing graded potentials reach the membrane of
the axon hillock, causing it's membrane potential to reach threshold? - ANSWER------>voltage-gated Na+
channels open rapidly
The attachment of a muscle's tendon to the stationary bone is called the___; the attachment of the
muscle's other tendon to the moveable bone is called the ____. - ANSWER------>origin, insertion
Which of the following fascicular arrangements would best be described as fascicles arranged on only
one side of the tendon? - ANSWER------>unipennate
Which type of synapse involves the secretion of a neurotransmitter across the synapse to stimulate the
post-synaptic cell? - ANSWER------>chemical
Your friend nods 'yes' to you. Going through flexion, extension and hyperextension in their enthusiastic
response. This movement at t he fulcrum represents a - ANSWER------>first class lever
, The sarcoplasmic reticulum stores - ANSWER------>calcium ions
Which of the following is NOT a function of smooth muscle tissue? - ANSWER------>blinking the eyelid
In a isometric contraction, the muscle develops tension but does NOT - ANSWER------>shorten
_________ 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 - ANSWER------>spatial summation
Which of the following molecules energizes the myosin club-head so that it can pull the actin molecule?
- ANSWER------>ATP
Which of the following muscles is the major agonist for plantar-flexion of the foot - ANSWER------
>gastrocnemius
Which muscle is responsible for movement of the eye medially ( adduction)? - ANSWER------>medial
rectus
EPSPs (excitatory postsynaptic potentials) occur when - ANSWER------>sodium channels are opened and
sodium enters the cell
In skeletal muscle cells, the transverse tubule is an extension of the - ANSWER------>sarcolemma
An inhibitory neurotransmitter ______ the postsynaptic membrane - ANSWER------>hyperpolarizes
______ cells function as immune/ phagocytic cells within the central nervous system - ANSWER------
>microglial
The myelin sheaths that surround the axons of some of the neurons in the central nervous system are
formed by: - ANSWER------>oligodendroglia
ACTUAL EXAM |WITH QUESTIONS AND CORRECT
DETAILED ANSWERS |PRE-EVALUATED A+
When compared to a classic lever system, the synovial joins our musculoskeletal system play the role of
the______. - ANSWER------>fulcrum
Which of the following events will occur when depolarizing graded potentials reach the membrane of
the axon hillock, causing it's membrane potential to reach threshold? - ANSWER------>voltage-gated Na+
channels open rapidly
The attachment of a muscle's tendon to the stationary bone is called the___; the attachment of the
muscle's other tendon to the moveable bone is called the ____. - ANSWER------>origin, insertion
Which of the following fascicular arrangements would best be described as fascicles arranged on only
one side of the tendon? - ANSWER------>unipennate
Which type of synapse involves the secretion of a neurotransmitter across the synapse to stimulate the
post-synaptic cell? - ANSWER------>chemical
Your friend nods 'yes' to you. Going through flexion, extension and hyperextension in their enthusiastic
response. This movement at t he fulcrum represents a - ANSWER------>first class lever
, The sarcoplasmic reticulum stores - ANSWER------>calcium ions
Which of the following is NOT a function of smooth muscle tissue? - ANSWER------>blinking the eyelid
In a isometric contraction, the muscle develops tension but does NOT - ANSWER------>shorten
_________ 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 - ANSWER------>spatial summation
Which of the following molecules energizes the myosin club-head so that it can pull the actin molecule?
- ANSWER------>ATP
Which of the following muscles is the major agonist for plantar-flexion of the foot - ANSWER------
>gastrocnemius
Which muscle is responsible for movement of the eye medially ( adduction)? - ANSWER------>medial
rectus
EPSPs (excitatory postsynaptic potentials) occur when - ANSWER------>sodium channels are opened and
sodium enters the cell
In skeletal muscle cells, the transverse tubule is an extension of the - ANSWER------>sarcolemma
An inhibitory neurotransmitter ______ the postsynaptic membrane - ANSWER------>hyperpolarizes
______ cells function as immune/ phagocytic cells within the central nervous system - ANSWER------
>microglial
The myelin sheaths that surround the axons of some of the neurons in the central nervous system are
formed by: - ANSWER------>oligodendroglia
