Question 1

Name the neuromuscular transmitter that is released into the synaptic cleft.

Accepted Answer

A) sodium ions 
B) calcium ions 
C) ATP 
D) creatine phosphate 
E) acetylcholine 
A) sodium ions 
B) calcium ions 
C) ATP 
D) creatine phosphate 
E) acetylcholine E

Question 2

Explain the function of each of the following structures in regards to muscle contraction: actin filaments,Ca+ ions,myosin filaments and ATP.

Accepted Answer

Actin filaments - slide past the myosin causing the contraction. Ca⁺ ions - are needed for the myosin to bind to the actin. Myosin filaments - pull actin filaments by means of crossbridges,also split ATP ATP - supply the energy for the muscle contraction

Question 3

The pectoral girdle is adapted for great strength,whereas the pelvic girdle is more adapted for flexibility.

Accepted Answer

A) True 
 B)False  False

Question 4

Which one of the following structures is NOT a part of the appendicular skeleton?

Accepted Answer

A) ribs 
B) fibula 
C) humerus 
D) coxal 
E) radius 
A) ribs 
B) fibula 
C) humerus 
D) coxal 
E) radius

Question 5

What is the correct order that a motor nerve impulse travels when triggering a muscle contraction?

Accepted Answer

A) motor nerve-synaptic cleft-sarcolemma-sarcoplasmic reticulum-troponin 
B) motor nerve-synaptic cleft-sarcolemma-troponin-sarcoplasmic reticulum 
C) motor nerve-sarcoplasmic reticulum-synaptic cleft-sarcolemma-troponin 
D) motor nerve-sarcolemma-sarcoplasmic reticulum-synaptic cleft-troponin 
E) motor nerve-sarcolemma-synaptic cleft-sarcoplasmic reticulum-troponin 
A) motor nerve-synaptic cleft-sarcolemma-sarcoplasmic reticulum-troponin 
B) motor nerve-synaptic cleft-sarcolemma-troponin-sarcoplasmic reticulum 
C) motor nerve-sarcoplasmic reticulum-synaptic cleft-sarcolemma-troponin 
D) motor nerve-sarcolemma-sarcoplasmic reticulum-synaptic cleft-troponin 
E) motor nerve-sarcolemma-synaptic cleft-sarcoplasmic reticulum-troponin

Question 6

In crowded Asian regions such as Hong Kong,there is not enough room for cemeteries.However,the dead can be temporarily buried and their bones can later be exhumed and stored in an ossarium,a wall made of small concrete boxes (about eight inches by eight inches by two feet long)just large enough to contain all the human bones.These dimensions are defined by the ________,which is the longest bone and the ________,which is the bone with the largest volume in the human body.

Accepted Answer

A) humerus; vertebrae 
B) femur; skull 
C) vertebrae; pelvis 
D) radius; scapula 
E) clavicle; metatarsals 
A) humerus; vertebrae 
B) femur; skull 
C) vertebrae; pelvis 
D) radius; scapula 
E) clavicle; metatarsals

Question 7

Identify the labeled structures on the human skeleton in the picture.   A: ________
B: ________
C: ________
D: ________
E: ________
F: ________
G: ________
H: ________
I: ________
J: ________
K: ________
L: ________
M: ________
N: ________
O: ________
P: ________

Accepted Answer

A: parietal bone B: temporal bone C: occ

Question 8

When a person straightens her arm,she is flexing the triceps brachii.During this movement,the triceps are referred to as the

Accepted Answer

A) agonist. 
B) antagonist. 
C) tendon. 
D) All of these. 
E) None of these. 
A) agonist. 
B) antagonist. 
C) tendon. 
D) All of these. 
E) None of these.

Question 9

According to the sliding filament theory of muscle contraction,

Accepted Answer

A) actin binds ATP and breaks it apart as actin pulls against myosin. 
B) calcium ions are released from myosin as the filaments slide by. 
C) the thick and thin filaments do not change length during this process. 
D) an accordion-like pleat is formed as the myosin and actin interact. 
E) All of the choices are correct. 
A) actin binds ATP and breaks it apart as actin pulls against myosin. 
B) calcium ions are released from myosin as the filaments slide by. 
C) the thick and thin filaments do not change length during this process. 
D) an accordion-like pleat is formed as the myosin and actin interact. 
E) All of the choices are correct.

Question 10

An oxygen debt occurs when

Accepted Answer

A) there is too much oxygen in the muscle tissues. 
B) ATP is depleted,and the body starts to use creatine phosphate to supply new ATP. 
C) ATP is depleted,and the body starts breaking down actin and myosin to allow muscle contraction to occur. 
D) there is no oxygen for aerobic respiration,and the body must use lactic acid fermentation to produce ATP. 
E) None of the choices are correct. 
A) there is too much oxygen in the muscle tissues. 
B) ATP is depleted,and the body starts to use creatine phosphate to supply new ATP. 
C) ATP is depleted,and the body starts breaking down actin and myosin to allow muscle contraction to occur. 
D) there is no oxygen for aerobic respiration,and the body must use lactic acid fermentation to produce ATP. 
E) None of the choices are correct.

Question 11

Which of the following statements about skeletons is NOT true?

Accepted Answer

A) The skeleton of a vertebrate is an endoskeleton. 
B) The skeleton of an arthropod is an exoskeleton. 
C) The skeleton of a clam is an exoskeleton. 
D) All exoskeletons must be shed as the animal grows. 
E) An earthworm has a fluid-filled cavity that acts as a hydrostatic skeleton. 
A) The skeleton of a vertebrate is an endoskeleton. 
B) The skeleton of an arthropod is an exoskeleton. 
C) The skeleton of a clam is an exoskeleton. 
D) All exoskeletons must be shed as the animal grows. 
E) An earthworm has a fluid-filled cavity that acts as a hydrostatic skeleton.

Question 12

The alternation of circular muscle contraction and longitudinal muscle contraction allows the earthworm to move forward.What type of support system aids locomotion in the earthworm?

Accepted Answer

A) an exoskeleton 
B) an endoskeleton 
C) a calcium carbonate shell 
D) a hydrostatic skeleton 
A) an exoskeleton 
B) an endoskeleton 
C) a calcium carbonate shell 
D) a hydrostatic skeleton

Question 13

One of the major functions of the skeletal system is to store long term sources of energy for the body.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following structures attaches muscle to the bone?

Accepted Answer

A) ligaments 
B) joints 
C) tendons 
D) adipose tissue 
E) sarcomere 
A) ligaments 
B) joints 
C) tendons 
D) adipose tissue 
E) sarcomere

Question 15

List the five major functions of the skeletal system.

Accepted Answer

1.Support of the body 2.Protec

Question 16

Which muscle list of structures is correctly organized from large to small?

Accepted Answer

A) muscle,muscle cell,myofibril,sarcomeres,filaments 
B) muscle,muscle fibers,sarcomeres,filaments,myofibrils 
C) muscle,sarcolemma,myofibrils,actin filaments,myosin filaments 
D) muscle cells,myofibrils,filaments,sarcoplasm 
A) muscle,muscle cell,myofibril,sarcomeres,filaments 
B) muscle,muscle fibers,sarcomeres,filaments,myofibrils 
C) muscle,sarcolemma,myofibrils,actin filaments,myosin filaments 
D) muscle cells,myofibrils,filaments,sarcoplasm

Question 17

The elbow and knee are examples of ________ joints.

Accepted Answer

A) immovable 
B) fibrous 
C) cartilaginous 
D) synovial 
E) ball-and-socket 
A) immovable 
B) fibrous 
C) cartilaginous 
D) synovial 
E) ball-and-socket

Question 18

Which of the following statements about the skeleton of a clam is NOT true?

Accepted Answer

A) The skeleton of a clam has two separate shells. 
B) The skeleton of a clam grows with the organism. 
C) The skeleton of a clam is made of calcium carbonate. 
D) The skeleton of a clam is used mainly to allow movement of the organism. 
E) The skeleton of a clam has muscles attached to it from the inside of the body. 
A) The skeleton of a clam has two separate shells. 
B) The skeleton of a clam grows with the organism. 
C) The skeleton of a clam is made of calcium carbonate. 
D) The skeleton of a clam is used mainly to allow movement of the organism. 
E) The skeleton of a clam has muscles attached to it from the inside of the body.

Question 19

Which of the following associations of bone structures and functions is NOT correct?

Accepted Answer

A) osteoblasts - cells that build bone tissue 
B) osteoclasts - cells that break down bone tissue 
C) osteons - tubular units of compact bone 
D) red bone marrow - fat-storage tissue 
E) lacunae - tiny chambers in concentric circles around a central canal 
A) osteoblasts - cells that build bone tissue 
B) osteoclasts - cells that break down bone tissue 
C) osteons - tubular units of compact bone 
D) red bone marrow - fat-storage tissue 
E) lacunae - tiny chambers in concentric circles around a central canal

Question 20

The type of bone tissue that is found in the middle portion of a long bone and has lacunae arranged in concentric circles around central canals that contain blood vessels and nerves is

Accepted Answer

A) spongy bone. 
B) compact bone. 
C) red marrow. 
D) yellow marrow. 
E) fibrous membrane. 
A) spongy bone. 
B) compact bone. 
C) red marrow. 
D) yellow marrow. 
E) fibrous membrane.

Exam 39: Locomotion and Support Systems

Name the neuromuscular transmitter that is released into the synaptic cleft.

Explain the function of each of the following structures in regards to muscle contraction: actin filaments,Ca+ ions,myosin filaments and ATP.

The pectoral girdle is adapted for great strength,whereas the pelvic girdle is more adapted for flexibility.

Which one of the following structures is NOT a part of the appendicular skeleton?

What is the correct order that a motor nerve impulse travels when triggering a muscle contraction?

Identify the labeled structures on the human skeleton in the picture. A: ________ B: ________ C: ________ D: ________ E: ________ F: ________ G: ________ H: ________ I: ________ J: ________ K: ________ L: ________ M: ________ N: ________ O: ________ P: ________

When a person straightens her arm,she is flexing the triceps brachii.During this movement,the triceps are referred to as the

According to the sliding filament theory of muscle contraction,

An oxygen debt occurs when

Which of the following statements about skeletons is NOT true?

The alternation of circular muscle contraction and longitudinal muscle contraction allows the earthworm to move forward.What type of support system aids locomotion in the earthworm?

One of the major functions of the skeletal system is to store long term sources of energy for the body.

Which of the following structures attaches muscle to the bone?

List the five major functions of the skeletal system.

Which muscle list of structures is correctly organized from large to small?

The elbow and knee are examples of ________ joints.

Which of the following statements about the skeleton of a clam is NOT true?

Which of the following associations of bone structures and functions is NOT correct?

The type of bone tissue that is found in the middle portion of a long bone and has lacunae arranged in concentric circles around central canals that contain blood vessels and nerves is

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Explain the function of each of the following structures in regards to muscle contraction: actin filaments,Ca⁺ ions,myosin filaments and ATP.

Identify the labeled structures on the human skeleton in the picture. A: B: C: D: E: F: G: H: I: J: K: L: M: N: O: P: