Chapters 7-9 exam questions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Articular cartilage is | hyaline cartilage.
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| Which of the following is not found associated with spongy bone? | Osteons
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| Men and women begin to lose bone at the same rate by about age 70. | True
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| Compact bone has ________, whereas spongy bone has __________. | osteons; trabeculae
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| The parietal bones meet each other along the sagittal suture. | True
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| Which of the following describes a female's pelvis compared to a male's pelvis? | A cavity that is wider in all dimensions, with lighter bones.
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| In a child, a vitamin D deficiency results in ______, whereas a vitamin A deficiency results in ______. | rickets; retardation of bone development
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| Which of the following groups of bones, based on shape, is associated with an incorrect example? | Flat bones - thigh bones
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| At what age are nearly all bones completely ossified? | 25 years
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| Osteoblasts are ______, whereas osteocytes are ______. | bone-forming cells; mature bone cells
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| A bone shaft is the diaphysis; the expanded parts at the ends are the epiphyses. | True
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| The sternum is part of the | axial skeleton.
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| The primary curves of the vertebral column are the | thoracic and sacral curvatures.
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| A bone thickens | as compact bone is deposited beneath the periosteum of the diaphysis.
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| The pectoral girdle consists of two scapulae and two clavicles. | True
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| The number of bones in most people is 206. | True
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| Bones in the human body are non-living. | False
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| Endochondral ossification ______, whereas intramembranous ossification ______. | replaces hyaline cartilage; replaces undifferentiated connective tissue
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| The acetabulum is | a depression in the hip bone that receives the head of the femur.
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| In a push-up, the elbow joint flexes as the person lowers. | True
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| Which of the following movements could occur at the hip joint? | All of the above
1-Abduction and adduction
2-Rotation
3-Flexion and extension
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| Synovial fluid moistens and lubricates the cartilaginous surfaces in a joint. | True
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| A gomphosis is a ______ joint. | fibrous
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| Classifying joints as synarthrotic, amphiarthrotic, or diarthrotic represents | the degree of movement possible at the joint.
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| Fibrous joints are the first to change with age. | True
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| A synovial membrane | secretes synovial fluid.
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| Arthritis is a circulatory problem. | False
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| A joint capsule is reinforced by | ligaments binding articular ends of bones together.
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| A meniscus cushions articulating surfaces of bones. | True
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| The joint between adjacent vertebral bodies is a | symphysis that is amphiarthrotic.
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| A saddle joint forms between bones whose articulating surfaces have both convex and concave regions. | True
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| The increase in the number of motor units activated as a result of more intense stimulation is called | recruitment.
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| A plank position is part of a yoga/Pilates workout. The person supports the body on the floor in a prone position with the arms and feet supporting the body. Contraction of the abdominal muscles in a plank is most likely | isometric.
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| The outermost layer of connective tissue surrounding a skeletal muscle is the | epimysium.
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| At a neuromuscular junction | neurotransmitters are released.
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| Which of the following statements is correct? | Actin filaments slide along myosin filaments.
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| The more movable end of a muscle is its | insertion.
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| The amount of oxygen liver cells require to support the conversion of lactic acid to produce glucose or glycogen is the | oxygen debt
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| Short muscle cells with centrally located nuclei are | smooth muscle fibers.
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| Which of the following is not a muscle of mastication? | Zygomaticus
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| Transverse tubules and sarcoplasmic reticulum are well developed in | skeletal and cardiac muscle fibers.
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| The soleus is a muscle that forms part of the | calf.
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| Myofibrils are composed primarily of | actin and myosin.
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| In the initiation of muscle fiber contraction calcium ions bind to tropomyosin, exposing active sites on actin for cross-bridge formation. | False
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| Endomysium separates individual muscle fibers from each other. | True
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| The buccinator muscle is in the | Cheek
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| The muscle that causes an action is the | agonist.
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| Binding sites on the surface of actin allow the formation of cross-bridges with molecules of | myosin.
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| A motor unit is | a motor neuron and the muscle fibers connected to it.
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