Question 1

Which feature of the mammalian skeleton provides an advantage for animals that are land-based predators?

Accepted Answer

A) Walking on their toes. 
B) Elongated hindlimbs that propel them forward. 
C) Bipedal locomotion on the soles of the feet. 
D) Long legs and running on the tips of elongated phalanges. 
E) All of these are advantages for land-based predators. 
A) Walking on their toes. 
B) Elongated hindlimbs that propel them forward. 
C) Bipedal locomotion on the soles of the feet. 
D) Long legs and running on the tips of elongated phalanges. 
E) All of these are advantages for land-based predators.

Question 2

Identify and briefly describe the labeled structures of the long bone in this picture.   A: ________
B: ________
C: ________
D: ________
E: ________
F: ________
G: ________

Accepted Answer

A: hyaline cartilage: found at the artic

Question 3

Which mammalian skeleton provides an advantage in an aquatic environment?

Accepted Answer

A) A streamlined torpedo-shaped skeleton. 
B) A skeleton that has elongated legs and large flippers. 
C) A skeleton that allows for walking on the tips of their toes across the bottom of the ocean. 
D) All of the answer choices provide an advantage in an aquatic environment. 
E) None of the answer choices provide an advantage in an aquatic environment. 
A) A streamlined torpedo-shaped skeleton. 
B) A skeleton that has elongated legs and large flippers. 
C) A skeleton that allows for walking on the tips of their toes across the bottom of the ocean. 
D) All of the answer choices provide an advantage in an aquatic environment. 
E) None of the answer choices provide an advantage in an aquatic environment.

Question 4

The radius is to the ulna as the

Accepted Answer

A) tibia is to the femur. 
B) fibula is to the ulna. 
C) fibula is to the tibia. 
D) humerus is to the femur. 
A) tibia is to the femur. 
B) fibula is to the ulna. 
C) fibula is to the tibia. 
D) humerus is to the femur.

Question 5

Which of the following lists the correct order of vertebral regions from superior to inferior?

Accepted Answer

A) thoracic-lumbar-sacrum-cervical-coccyx 
B) cervical-lumbar-sacrum-thoracic-coccyx 
C) cervical-thoracic-lumbar-sacrum-coccyx 
D) lumbar-sacrum-cervical-thoracic-coccyx 
E) sacrum-cervical-thoracic-lumbar-coccyx 
A) thoracic-lumbar-sacrum-cervical-coccyx 
B) cervical-lumbar-sacrum-thoracic-coccyx 
C) cervical-thoracic-lumbar-sacrum-coccyx 
D) lumbar-sacrum-cervical-thoracic-coccyx 
E) sacrum-cervical-thoracic-lumbar-coccyx

Question 6

Explain the difference between the functions of the osteoblasts and osteocytes?

Accepted Answer

Osteoblasts are known as the bone formin

Question 7

If Ca+ is restricted to a muscle cell,what are the potential consequences?

Accepted Answer

A) The myosin head would not be able to bind to the actin filament. 
B) The myosin filament would not slide past the actin filament causing a contraction. 
C) ATP is not split causing the release of energy. 
D) All of these are potential consequences. 
E) None of these are potential consequences. 
A) The myosin head would not be able to bind to the actin filament. 
B) The myosin filament would not slide past the actin filament causing a contraction. 
C) ATP is not split causing the release of energy. 
D) All of these are potential consequences. 
E) None of these are potential consequences.

Question 8

In muscle innervation motor nerve fibers signal muscle movement from the region called the neuromuscular junction.

Accepted Answer

A) True 
 B)False

Question 9

________ will take calcium from the blood,whereas ________ will deposit calcium into the blood.

Accepted Answer

A) Osteoclasts; osteoblasts 
B) Osteocytes; osteoclasts 
C) Osteocytes; osteoblasts 
D) Osteoblasts,osteocytes 
E) Osteoblasts; osteoclasts 
A) Osteoclasts; osteoblasts 
B) Osteocytes; osteoclasts 
C) Osteocytes; osteoblasts 
D) Osteoblasts,osteocytes 
E) Osteoblasts; osteoclasts

Question 10

Which of these molecules acts as an ATPase,breaking down ATP to perform its function in muscle contraction?

Accepted Answer

A) actin 
B) myosin 
C) tropomyosin 
D) troponin 
E) calcium 
A) actin 
B) myosin 
C) tropomyosin 
D) troponin 
E) calcium

Question 11

Which of the following statements about the insect exoskeleton is NOT true?

Accepted Answer

A) The exoskeleton protects insects against predators and drying out. 
B) The insect exoskeleton is jointed and movable. 
C) The insect exoskeleton grows with the organism. 
D) The insect exoskeleton is made of a complex form of carbohydrate called chitin. 
E) The insect exoskeleton has muscles attached to it from the inside of the body. 
A) The exoskeleton protects insects against predators and drying out. 
B) The insect exoskeleton is jointed and movable. 
C) The insect exoskeleton grows with the organism. 
D) The insect exoskeleton is made of a complex form of carbohydrate called chitin. 
E) The insect exoskeleton has muscles attached to it from the inside of the body.

Question 12

Muscle contraction is triggered

Accepted Answer

A) when high levels of oxygen and sugar are released by the sarcolemma. 
B) when a surplus of ATP is released by a nerve motor unit. 
C) by release of a neurotransmitter at a synapse that directly causes actin and myosin to slide. 
D) by the nerve releasing a neurotransmitter,which triggers a flow of calcium that attaches to actin filaments and exposes the myosin binding sites. 
E) by the nerve releasing a neurotransmitter,which triggers a flow of calcium that releases ATP and begins the actin filaments sliding across the myosin binding sites. 
A) when high levels of oxygen and sugar are released by the sarcolemma. 
B) when a surplus of ATP is released by a nerve motor unit. 
C) by release of a neurotransmitter at a synapse that directly causes actin and myosin to slide. 
D) by the nerve releasing a neurotransmitter,which triggers a flow of calcium that attaches to actin filaments and exposes the myosin binding sites. 
E) by the nerve releasing a neurotransmitter,which triggers a flow of calcium that releases ATP and begins the actin filaments sliding across the myosin binding sites.

Question 13

The sarcoplasmic reticulum releases calcium ions when stimulated directly by the

Accepted Answer

A) sarcolemma. 
B) neuromuscular junction. 
C) tropomyosin. 
D) axon bulb. 
E) T tubule. 
A) sarcolemma. 
B) neuromuscular junction. 
C) tropomyosin. 
D) axon bulb. 
E) T tubule.

Question 14

Which of the following bones is (are)NOT part of the axial skeleton?

Accepted Answer

A) ribs 
B) skull 
C) sternum 
D) scapula 
E) vertebrae 
A) ribs 
B) skull 
C) sternum 
D) scapula 
E) vertebrae

Question 15

Calcium ions bind to

Accepted Answer

A) tropomyosin. 
B) troponin. 
C) actin. 
D) myosin. 
E) cross bridges. 
A) tropomyosin. 
B) troponin. 
C) actin. 
D) myosin. 
E) cross bridges.

Exam 39: Locomotion and Support Systems

Which feature of the mammalian skeleton provides an advantage for animals that are land-based predators?

Identify and briefly describe the labeled structures of the long bone in this picture. A: ________ B: ________ C: ________ D: ________ E: ________ F: ________ G: ________

Which mammalian skeleton provides an advantage in an aquatic environment?

The radius is to the ulna as the

Which of the following lists the correct order of vertebral regions from superior to inferior?

Explain the difference between the functions of the osteoblasts and osteocytes?

If Ca+ is restricted to a muscle cell,what are the potential consequences?

In muscle innervation motor nerve fibers signal muscle movement from the region called the neuromuscular junction.

________ will take calcium from the blood,whereas ________ will deposit calcium into the blood.

Which of these molecules acts as an ATPase,breaking down ATP to perform its function in muscle contraction?

Which of the following statements about the insect exoskeleton is NOT true?

Muscle contraction is triggered

The sarcoplasmic reticulum releases calcium ions when stimulated directly by the

Which of the following bones is (are)NOT part of the axial skeleton?

Calcium ions bind to

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Identify and briefly describe the labeled structures of the long bone in this picture. A: B: C: D: E: F: G:

If Ca⁺ is restricted to a muscle cell,what are the potential consequences?

will take calcium from the blood,whereas will deposit calcium into the blood.