BIO 181
BIO 181 LAB FINAL EXAM STUDY GUIDE
NEWEST ACTUAL QUESTIONS AND
ANSWERS 2025
Which of the following muscles is NOT associated with the mouth?
A. Depressor labii inferioris
B. Orbicularis oculi
C. Depressor anguli oris
D. Orbicularis oris - Correct Ans-B. Orbicularis oculi
Which of the following is a neck muscle?
A. Mentalis
B. Platysma
C. Serratus anterior
D. Gracilis - Correct Ans-B. Platysma
Which of these muscles is located on the posterior surface of the arm?
A. Deltoid
B. Latissimus dorsi
C. Biceps brachii
D. Triceps brachii - Correct Ans-D. Triceps brachii
What characteristic is NOT descriptive of cardiac muscle tissue?
A. Voluntary muscle contractions
B. Striations
C. Intercalated discs
D. Located in the heart - Correct Ans-A. Voluntary muscle contractions
The two contractile proteins that make up the myofilaments of skeletal muscle are
__________________ and _________________. - Correct Ans-Actin & myosin
Name the two types of striated muscle. ________________ and _______________. -
Correct Ans-Skeletal and cardiac
Name the two types of involuntary muscle. ________________ and _______________.
- Correct Ans-Cardiac and smooth
The different types of muscle tissue differ from each other by
A. Microscopic anatomy
B. Location
C. Type of control (whether voluntary or involuntary)
D. All of these choices are correct - Correct Ans-D. All of these choices are correct
The brain and spinal cord compose the ___________.
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, BIO 181
A. Central nervous system
B. Peripheral nervous system
C. Autonomic nervous system
D. Enteric nervous system - Correct Ans-A. Central nervous system
The sensory, or afferent, division of the peripheral nervous system carries information
from the brain and spinal cord to effector organs.
A. True
B. False - Correct Ans-B. False
The short, branched cytoplasmic extensions that allow neurons to receive input signals
are called _________.
A. Axons
B. Somata
C. Dendrites
D. Synapses - Correct Ans-C. Dendrites
Neurons that relay information within the CNS and are the location of information
processing are called___________.
A. Interneurons
B. Efferent neurons
C. Sensory neurons
D. Motor neurons - Correct Ans-A. Interneurons
The small phagocytic cells that engulf debris and pathogens in the CNS are the
___________.
A. Microglia
B. Satellite cells
C. Ependymal cells
D. Oligodendrocytes - Correct Ans-A. Microglia
Dark-staining clusters of RER and ribosomes in neurons are called _________.
A. Dendrites
B. Nodes of Ranvier
C. Neurofibrils
D. Nissl bodies - Correct Ans-D. Nissl bodies
What is the most metabolically active part of a neuron?
A. Cell body
B. Axon
C. Axon hillock
D. Dendrites - Correct Ans-A. Cell body
Neurons are responsible for sending and receiving signals referred to as action
potentials while neuroglial cells serve a variety of protective functions.
A. True
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BIO 181 LAB FINAL EXAM STUDY GUIDE
NEWEST ACTUAL QUESTIONS AND
ANSWERS 2025
Which of the following muscles is NOT associated with the mouth?
A. Depressor labii inferioris
B. Orbicularis oculi
C. Depressor anguli oris
D. Orbicularis oris - Correct Ans-B. Orbicularis oculi
Which of the following is a neck muscle?
A. Mentalis
B. Platysma
C. Serratus anterior
D. Gracilis - Correct Ans-B. Platysma
Which of these muscles is located on the posterior surface of the arm?
A. Deltoid
B. Latissimus dorsi
C. Biceps brachii
D. Triceps brachii - Correct Ans-D. Triceps brachii
What characteristic is NOT descriptive of cardiac muscle tissue?
A. Voluntary muscle contractions
B. Striations
C. Intercalated discs
D. Located in the heart - Correct Ans-A. Voluntary muscle contractions
The two contractile proteins that make up the myofilaments of skeletal muscle are
__________________ and _________________. - Correct Ans-Actin & myosin
Name the two types of striated muscle. ________________ and _______________. -
Correct Ans-Skeletal and cardiac
Name the two types of involuntary muscle. ________________ and _______________.
- Correct Ans-Cardiac and smooth
The different types of muscle tissue differ from each other by
A. Microscopic anatomy
B. Location
C. Type of control (whether voluntary or involuntary)
D. All of these choices are correct - Correct Ans-D. All of these choices are correct
The brain and spinal cord compose the ___________.
1|Page
, BIO 181
A. Central nervous system
B. Peripheral nervous system
C. Autonomic nervous system
D. Enteric nervous system - Correct Ans-A. Central nervous system
The sensory, or afferent, division of the peripheral nervous system carries information
from the brain and spinal cord to effector organs.
A. True
B. False - Correct Ans-B. False
The short, branched cytoplasmic extensions that allow neurons to receive input signals
are called _________.
A. Axons
B. Somata
C. Dendrites
D. Synapses - Correct Ans-C. Dendrites
Neurons that relay information within the CNS and are the location of information
processing are called___________.
A. Interneurons
B. Efferent neurons
C. Sensory neurons
D. Motor neurons - Correct Ans-A. Interneurons
The small phagocytic cells that engulf debris and pathogens in the CNS are the
___________.
A. Microglia
B. Satellite cells
C. Ependymal cells
D. Oligodendrocytes - Correct Ans-A. Microglia
Dark-staining clusters of RER and ribosomes in neurons are called _________.
A. Dendrites
B. Nodes of Ranvier
C. Neurofibrils
D. Nissl bodies - Correct Ans-D. Nissl bodies
What is the most metabolically active part of a neuron?
A. Cell body
B. Axon
C. Axon hillock
D. Dendrites - Correct Ans-A. Cell body
Neurons are responsible for sending and receiving signals referred to as action
potentials while neuroglial cells serve a variety of protective functions.
A. True
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