Question 1

Bending a joint requires

Accepted Answer

A)  relaxation of extensors and flexors. 
B)  contraction of extensors and flexors. 
C)  relaxation of extensors and contraction of flexors. 
D)  contraction of extensors and relaxation of flexors. 
A)  relaxation of extensors and flexors. 
B)  contraction of extensors and flexors. 
C)  relaxation of extensors and contraction of flexors. 
D)  contraction of extensors and relaxation of flexors.

Question 2

Athletic injuries to male and female athletes

Accepted Answer

A)  occur at nearly the same rate. 
B)  are different largely due to hormonal influences. 
C)  are different largely due to structural differences. 
D)  are different because of the amount of time each gender usually spends in training. 
A)  occur at nearly the same rate. 
B)  are different largely due to hormonal influences. 
C)  are different largely due to structural differences. 
D)  are different because of the amount of time each gender usually spends in training.

Question 3

The structure indicated by the number 3 in this image is a

Accepted Answer

A)  myofibril. 
B)  z-line. 
C)  sarcomere. 
D)  motor end plate. 
A)  myofibril. 
B)  z-line. 
C)  sarcomere. 
D)  motor end plate.

Question 4

One major difference between striated and smooth muscles is that

Accepted Answer

A)  smooth muscles move the voluntary system and striated muscles move automatic systems. 
B)  striated muscles are responsible for fast twitch and smooth muscles are responsible for slow twitch. 
C)  striated muscles move mostly voluntary systems while smooth muscles move involuntary,automatic systems. 
D)  smooth muscles are made up of myofibrils and striated muscle is made up of only sarcomeres. 
A)  smooth muscles move the voluntary system and striated muscles move automatic systems. 
B)  striated muscles are responsible for fast twitch and smooth muscles are responsible for slow twitch. 
C)  striated muscles move mostly voluntary systems while smooth muscles move involuntary,automatic systems. 
D)  smooth muscles are made up of myofibrils and striated muscle is made up of only sarcomeres.

Question 5

Cobra venom

Accepted Answer

A)  causes paralysis by preventing neurotransmitter release. 
B)  causes paralysis by blocking postsynaptic receptors. 
C)  interferes with neurotransmitter synthesis. 
D)  produces convulsions by stimulating neurotransmitter release. 
A)  causes paralysis by preventing neurotransmitter release. 
B)  causes paralysis by blocking postsynaptic receptors. 
C)  interferes with neurotransmitter synthesis. 
D)  produces convulsions by stimulating neurotransmitter release.

Question 6

Genetic abnormalities are probably most directly responsible for

Accepted Answer

A)  muscular dystrophy and Huntington's disease. 
B)  polio and muscular dystrophy. 
C)  Huntington's disease and polio. 
D)  tetanus and polio. 
A)  muscular dystrophy and Huntington's disease. 
B)  polio and muscular dystrophy. 
C)  Huntington's disease and polio. 
D)  tetanus and polio.

Question 7

Motor neurons with small cell bodies usually innervate _________ muscle fibers.

Accepted Answer

A)  Type I 
B)  Type IIa 
C)  Type IIb 
D)  combinations of Type IIa and Type IIb 
A)  Type I 
B)  Type IIa 
C)  Type IIb 
D)  combinations of Type IIa and Type IIb

Question 8

Motor neurons are

Accepted Answer

A)  evenly distributed throughout the gray matter of the spinal cord. 
B)  evenly distributed throughout the white matter of the spinal cord. 
C)  more numerous in spinal segments serving the middle torso. 
D)  more numerous in spinal segments serving the arms and legs. 
A)  evenly distributed throughout the gray matter of the spinal cord. 
B)  evenly distributed throughout the white matter of the spinal cord. 
C)  more numerous in spinal segments serving the middle torso. 
D)  more numerous in spinal segments serving the arms and legs.

Question 9

The patellar tendon or "knee jerk" reflex is an example of a _________ reflex.

Accepted Answer

A)  withdrawal 
B)  flexion 
C)  monosynaptic 
D)  polysynaptic 
A)  withdrawal 
B)  flexion 
C)  monosynaptic 
D)  polysynaptic

Question 10

Spinal motor neurons responsible for contracting muscles are known as _________ motor neurons.

Accepted Answer

A)  alpha 
B)  beta 
C)  gamma 
D)  theta 
A)  alpha 
B)  beta 
C)  gamma 
D)  theta

Question 11

Rey was being evaluated for a possible spinal cord injury during a college football game.The team physician stroked the sole of Rey's foot,and his toes curled.This observation suggests that

Accepted Answer

A)  Rey has a serious spinal cord injury that might affect his future mobility. 
B)  Rey has a mild spinal cord injury,and with proper treatment,he should recover completely. 
C)  Rey does not appear to have damaged his spinal cord,although this should be confirmed by further testing. 
D)  Rey's spinal cord is probably all right,but it appears that he has sustained damage to his foot or ankle. 
A)  Rey has a serious spinal cord injury that might affect his future mobility. 
B)  Rey has a mild spinal cord injury,and with proper treatment,he should recover completely. 
C)  Rey does not appear to have damaged his spinal cord,although this should be confirmed by further testing. 
D)  Rey's spinal cord is probably all right,but it appears that he has sustained damage to his foot or ankle.

Question 12

The long strands of protein running the length of a muscle fiber are known as

Accepted Answer

A)  sarcomeres. 
B)  myofibrils. 
C)  Z lines. 
D)  troponins. 
A)  sarcomeres. 
B)  myofibrils. 
C)  Z lines. 
D)  troponins.

Question 13

Abnormalities in muscle fiber proteins characterize

Accepted Answer

A)  myasthenia gravis. 
B)  muscular dystrophy. 
C)  Parkinson's disease. 
D)  Huntington's disease. 
A)  myasthenia gravis. 
B)  muscular dystrophy. 
C)  Parkinson's disease. 
D)  Huntington's disease.

Question 14

The rubrospinal tract originates in the

Accepted Answer

A)  reticular formation. 
B)  superior colliculi. 
C)  red nucleus. 
D)  vestibular nuclei. 
A)  reticular formation. 
B)  superior colliculi. 
C)  red nucleus. 
D)  vestibular nuclei.

Question 15

The muscles of the arms and shoulders contain

Accepted Answer

A)  approximately equal amounts of fast and slow-twitch fibers,making them well-suited for both endurance and explosive movements. 
B)  higher proportions of slow-twitch fibers,making them better suited for endurance than for explosive movements. 
C)  higher proportions of fast-twitch fibers,making them better suited for explosive movements than for endurance movements. 
D)  higher proportions of fast-twitch fibers,making them better suited for endurance than for explosive movements. 
A)  approximately equal amounts of fast and slow-twitch fibers,making them well-suited for both endurance and explosive movements. 
B)  higher proportions of slow-twitch fibers,making them better suited for endurance than for explosive movements. 
C)  higher proportions of fast-twitch fibers,making them better suited for explosive movements than for endurance movements. 
D)  higher proportions of fast-twitch fibers,making them better suited for endurance than for explosive movements.

Question 16

Drugs that inhibit caspases may prove to be effective in treating

Accepted Answer

A)  polio. 
B)  amyotrophic lateral sclerosis. 
C)  muscular dystrophy. 
D)  myasthenia gravis. 
A)  polio. 
B)  amyotrophic lateral sclerosis. 
C)  muscular dystrophy. 
D)  myasthenia gravis.

Question 17

Temporal summation may occur at the neuromuscular junction because

Accepted Answer

A)  action potentials last longer than muscle contractions. 
B)  muscle contractions last longer than action potentials. 
C)  many motor neurons form synapses at a single neuromuscular junction. 
D)  acetylcholine is broken down slowly in the synaptic gap. 
A)  action potentials last longer than muscle contractions. 
B)  muscle contractions last longer than action potentials. 
C)  many motor neurons form synapses at a single neuromuscular junction. 
D)  acetylcholine is broken down slowly in the synaptic gap.

Question 18

One of the actions of the basal ganglia is the

Accepted Answer

A)  inhibition of the thalamus. 
B)  excitation of the thalamus. 
C)  inhibition of the cerebellum. 
D)  excitation of the cerebellum. 
A)  inhibition of the thalamus. 
B)  excitation of the thalamus. 
C)  inhibition of the cerebellum. 
D)  excitation of the cerebellum.

Question 19

Describe the three types of muscle found in the human body.

Accepted Answer

Human muscles are either smooth or stria

Question 20

The cell bodies of alpha motor neurons are located _________ and each one enervates _________.

Accepted Answer

A)  on the muscle;either fast or slow twitch fibers,but not both 
B)  in the brain;both fast and slow twitch fibers 
C)  in the spinal cord;both fast and slow twitch fibers 
D)  in the spinal cord;either fast or slow twitch fibers,but not both 
A)  on the muscle;either fast or slow twitch fibers,but not both 
B)  in the brain;both fast and slow twitch fibers 
C)  in the spinal cord;both fast and slow twitch fibers 
D)  in the spinal cord;either fast or slow twitch fibers,but not both

Bending a joint requires

Athletic injuries to male and female athletes

The structure indicated by the number 3 in this image is a

One major difference between striated and smooth muscles is that

Cobra venom

Genetic abnormalities are probably most directly responsible for

Motor neurons with small cell bodies usually innervate _________ muscle fibers.

Motor neurons are

The patellar tendon or "knee jerk" reflex is an example of a _________ reflex.

Spinal motor neurons responsible for contracting muscles are known as _________ motor neurons.

Rey was being evaluated for a possible spinal cord injury during a college football game.The team physician stroked the sole of Rey's foot,and his toes curled.This observation suggests that

The long strands of protein running the length of a muscle fiber are known as

Abnormalities in muscle fiber proteins characterize

The rubrospinal tract originates in the

The muscles of the arms and shoulders contain

Drugs that inhibit caspases may prove to be effective in treating

Temporal summation may occur at the neuromuscular junction because

One of the actions of the basal ganglia is the

Describe the three types of muscle found in the human body.

The cell bodies of alpha motor neurons are located _ and each one enervates _.

Introducing Biological Psychology

The Anatomy and Evolution of the Nervous System

Cells of the Nervous System

Psychopharmacology

Genetics and the Development of the Human Brain

Vision

Nonvisual Sensation and Perception

Temperature Regulation,thirst,and Hunger

Sexual Behavior

Sleep and Waking

Learning and Memory

Lateralization, language, and Intelligence

Emotion, reward, aggression, and Stress

Neurological Disorders

Psychological Disorders

Filters

Exam 8: Movement

Bending a joint requires

Athletic injuries to male and female athletes

The structure indicated by the number 3 in this image is a

One major difference between striated and smooth muscles is that

Cobra venom

Genetic abnormalities are probably most directly responsible for

Motor neurons with small cell bodies usually innervate _________ muscle fibers.

Motor neurons are

The patellar tendon or "knee jerk" reflex is an example of a _________ reflex.

Spinal motor neurons responsible for contracting muscles are known as _________ motor neurons.

Rey was being evaluated for a possible spinal cord injury during a college football game.The team physician stroked the sole of Rey's foot,and his toes curled.This observation suggests that

The long strands of protein running the length of a muscle fiber are known as

Abnormalities in muscle fiber proteins characterize

The rubrospinal tract originates in the

The muscles of the arms and shoulders contain

Drugs that inhibit caspases may prove to be effective in treating

Temporal summation may occur at the neuromuscular junction because

One of the actions of the basal ganglia is the

Describe the three types of muscle found in the human body.

The cell bodies of alpha motor neurons are located _________ and each one enervates _________.

Introducing Biological Psychology

The Anatomy and Evolution of the Nervous System

Cells of the Nervous System

Psychopharmacology

Genetics and the Development of the Human Brain

Vision

Nonvisual Sensation and Perception

Temperature Regulation,thirst,and Hunger

Sexual Behavior

Sleep and Waking

Learning and Memory

Lateralization, language, and Intelligence

Emotion, reward, aggression, and Stress

Neurological Disorders

Psychological Disorders

Filters

The cell bodies of alpha motor neurons are located _ and each one enervates _.