Question 1

What does bone provide the blood with?

Accepted Answer

A) phosphate and calcium ions 
B) magnesium and phosphate ions 
C) carbon dioxide and sodium 
D) sodium and magnesium ions 
A) phosphate and calcium ions 
B) magnesium and phosphate ions 
C) carbon dioxide and sodium 
D) sodium and magnesium ions A

Question 2

Match each molecule with its description.
-acetylcholine

Accepted Answer

A) molecules that form a twisted double helix that makes up most of the thin filaments 
B) neurotransmitters involved in muscle cell contraction 
C) molecules that block the crossbridge binding sites when the muscle is not contracting 
D) molecules that make up thick filaments 
E) molecules that bind to Ca2+, change their shape, and then uncover the crossbridge binding sites 
A) molecules that form a twisted double helix that makes up most of the thin filaments 
B) neurotransmitters involved in muscle cell contraction 
C) molecules that block the crossbridge binding sites when the muscle is not contracting 
D) molecules that make up thick filaments 
E) molecules that bind to Ca2+, change their shape, and then uncover the crossbridge binding sites B

Question 3

Which term refers to a muscle that increases the angle between two bones at a joint?

Accepted Answer

A) flexor 
B) depressor 
C) agonist 
D) extensor 
A) flexor 
B) depressor 
C) agonist 
D) extensor D

Question 4

Match each bone type with a skeleton type. Each skeleton type may be used once, more than once, or not at all.
-femur

Accepted Answer

A) axial skeleton 
B) appendicular skeleton 
C) both the axial and the appendicular skeleton 
D) neither the axial nor the appendicular skeleton 
A) axial skeleton 
B) appendicular skeleton 
C) both the axial and the appendicular skeleton 
D) neither the axial nor the appendicular skeleton

Question 5

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all.
-high fatigue resistance

Accepted Answer

A) slow 
B) fast aerobic 
C) fast anaerobic 
D) both slow and fast aerobic 
E) both fast aerobic and fast anaerobic 
A) slow 
B) fast aerobic 
C) fast anaerobic 
D) both slow and fast aerobic 
E) both fast aerobic and fast anaerobic

Question 6

What is the main role of myoglobin in muscle fibres?

Accepted Answer

A) to enhance the strength of the power stroke 
B) to magnify responses to neurotransmitters 
C) to store oxygen 
D) to synthesize ATP 
A) to enhance the strength of the power stroke 
B) to magnify responses to neurotransmitters 
C) to store oxygen 
D) to synthesize ATP

Question 7

Which term refers to a muscle that has the opposite effect to that of another muscle at the same joint?

Accepted Answer

A) depressor 
B) extensor 
C) flexor 
D) antagonist 
A) depressor 
B) extensor 
C) flexor 
D) antagonist

Question 8

In a skeletal muscle contraction, what must be moved to the grooves in the actin double helix to uncover the crossbridge binding site?

Accepted Answer

A) tropomyosin 
B) ATP 
C) troponin 
D) acetylcholine 
A) tropomyosin 
B) ATP 
C) troponin 
D) acetylcholine

Question 9

What kind of joints hold human vertebrae together?

Accepted Answer

A) synovial joints 
B) cartilaginous joints 
C) fibrous joints 
D) flexible joints 
A) synovial joints 
B) cartilaginous joints 
C) fibrous joints 
D) flexible joints

Question 10

In a skeletal muscle contraction, which neurotransmitter is released at the axon terminal to trigger an action potential in the muscle cell?

Accepted Answer

A) acetylcholine 
B) tropomyosin 
C) Ca2+ 
D) troponin 
A) acetylcholine 
B) tropomyosin 
C) Ca2+ 
D) troponin

Question 11

In which ion would a defect in transport have the most direct effect on muscle contraction?

Accepted Answer

A) Na+ 
B) Ca2+ 
C) Zn2+ 
D) K+ 
A) Na+ 
B) Ca2+ 
C) Zn2+ 
D) K+

Question 12

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all.
-intermediate fatigue resistance

Accepted Answer

A) slow 
B) fast aerobic 
C) fast anaerobic 
D) both slow and fast aerobic 
E) both fast aerobic and fast anaerobic 
A) slow 
B) fast aerobic 
C) fast anaerobic 
D) both slow and fast aerobic 
E) both fast aerobic and fast anaerobic

Question 13

What are the I bands in skeletal muscles composed of?

Accepted Answer

A) discs to which thick filaments are anchored 
B) thin filaments but no thick filaments 
C) thick filaments but no thin filaments 
D) stacked, thick filaments along with parts of thin filaments that overlap both ends 
A) discs to which thick filaments are anchored 
B) thin filaments but no thick filaments 
C) thick filaments but no thin filaments 
D) stacked, thick filaments along with parts of thin filaments that overlap both ends

Question 14

Which of the following is a system of vesicles that wraps around each A band and I band, and stores ions that are used in muscle contractions?

Accepted Answer

A) a neuromuscular junction 
B) the sarcoplasmic reticulum 
C) the microvillus 
D) the Golgi apparatus 
A) a neuromuscular junction 
B) the sarcoplasmic reticulum 
C) the microvillus 
D) the Golgi apparatus

Question 15

Match each bone type with a skeleton type. Each skeleton type may be used once, more than once, or not at all.
-sternum

Accepted Answer

A) axial skeleton 
B) appendicular skeleton 
C) both the axial and the appendicular skeleton 
D) neither the axial nor the appendicular skeleton 
A) axial skeleton 
B) appendicular skeleton 
C) both the axial and the appendicular skeleton 
D) neither the axial nor the appendicular skeleton

Question 16

Match each bone type with a skeleton type. Each skeleton type may be used once, more than once, or not at all.
-scapula

Accepted Answer

A) axial skeleton 
B) appendicular skeleton 
C) both the axial and the appendicular skeleton 
D) neither the axial nor the appendicular skeleton 
A) axial skeleton 
B) appendicular skeleton 
C) both the axial and the appendicular skeleton 
D) neither the axial nor the appendicular skeleton

Question 17

In a skeletal muscle contraction, which of the following undergoes a conformational change when it binds to a specific ion and then uncovers the crossbridge binding site by causing another factor to be moved to the grooves in the actin double helix?

Accepted Answer

A) ATP 
B) Ca2+ 
C) acetylcholine 
D) troponin 
A) ATP 
B) Ca2+ 
C) acetylcholine 
D) troponin

Question 18

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all.
-high myosin-ATPase activity

Accepted Answer

A) slow 
B) fast aerobic 
C) fast anaerobic 
D) both slow and fast aerobic 
E) both fast aerobic and fast anaerobic 
A) slow 
B) fast aerobic 
C) fast anaerobic 
D) both slow and fast aerobic 
E) both fast aerobic and fast anaerobic

Question 19

Match each bone type with a skeleton type. Each skeleton type may be used once, more than once, or not at all.
-facial bones

Accepted Answer

A) axial skeleton 
B) appendicular skeleton 
C) both the axial and the appendicular skeleton 
D) neither the axial nor the appendicular skeleton 
A) axial skeleton 
B) appendicular skeleton 
C) both the axial and the appendicular skeleton 
D) neither the axial nor the appendicular skeleton

Question 20

In skeletal muscle contraction, what binds to myosin?

Accepted Answer

A) ATP 
B) Ca2+ 
C) troponin 
D) acetylcholine 
A) ATP 
B) Ca2+ 
C) troponin 
D) acetylcholine

Exam 46: Muscles, Skeletons, and Body Movements

What does bone provide the blood with?

Match each molecule with its description. -acetylcholine

Which term refers to a muscle that increases the angle between two bones at a joint?

Match each bone type with a skeleton type. Each skeleton type may be used once, more than once, or not at all. -femur

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all. -high fatigue resistance

What is the main role of myoglobin in muscle fibres?

Which term refers to a muscle that has the opposite effect to that of another muscle at the same joint?

In a skeletal muscle contraction, what must be moved to the grooves in the actin double helix to uncover the crossbridge binding site?

What kind of joints hold human vertebrae together?

In a skeletal muscle contraction, which neurotransmitter is released at the axon terminal to trigger an action potential in the muscle cell?

In which ion would a defect in transport have the most direct effect on muscle contraction?

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all. -intermediate fatigue resistance

What are the I bands in skeletal muscles composed of?

Which of the following is a system of vesicles that wraps around each A band and I band, and stores ions that are used in muscle contractions?

Match each bone type with a skeleton type. Each skeleton type may be used once, more than once, or not at all. -sternum

Match each bone type with a skeleton type. Each skeleton type may be used once, more than once, or not at all. -scapula

In a skeletal muscle contraction, which of the following undergoes a conformational change when it binds to a specific ion and then uncovers the crossbridge binding site by causing another factor to be moved to the grooves in the actin double helix?

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all. -high myosin-ATPase activity

Match each bone type with a skeleton type. Each skeleton type may be used once, more than once, or not at all. -facial bones

In skeletal muscle contraction, what binds to myosin?

Light and Life

The Cell: an Overview

Defining Life and Its Origins

Energy and Enzymes

Cell Membranes and Signalling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Structure and Expression

Control of Gene Expression

Dna Technologies

Genomes and Proteomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Species and Macroevolution

Understanding the History of Life on Earth

Humans and Evolution

Bacteria and Archaea

Viruses, Viroids, and Prions: Infectious Biological Particles

Protists

Fungi

Plants

Diversity of Animals 1: Sponges, Radiata, Platyhelminthes, and Protostomes

Diversity of Animals 2: Deuterostomes: Vertebrates and Their Closest Relatives

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Conservation of Biodiversity

Putting Selection to Work

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Transport in Animals: the Circulatory System

Reproduction in Animals

Animal Development

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Integration

Animal Behaviour

Animal Nutrition

Gas Exchange: the Respiratory System

Regulating the Internal Environment

Defences Against Disease

Conservation and Evolutionary Physiology

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