Download APHY 101 Ivy Tech Midterm Exam 3 Ch 7-9 2024 Quiz Study guide and more Exams Anatomy in PDF only on Docsity!
APHY 101 Ivy Tech Midterm Exam 3 Ch
7-9 2024 Quiz Study guide
Which of the following groups of bones, based on shape, is associated with an incorrect example? Long bones - forearm bones Flat bones - thigh bones Short bones - wrist and ankle bones Irregular bones - vertebrae - Answer>>Flat bones - thigh bones The capitulum and trochlea are located - Answer>>at the distal end of the humerus. Bones in the human body are non-living. True False - Answer>>False The zygomatic bone is an example of a(n) - Answer>>irregular bone. Osteoblasts are ______, whereas osteocytes are ______. - Answer>>bone-forming cells; mature bone cells The pectoral girdle consists of two scapulae and two clavicles. True False - Answer>>True
The acetabulum is - Answer>>a depression in the hip bone that receives the head of the femur. Compact bone has ________, whereas spongy bone has __________. - Answer>>osteons; trabeculae The number of bones in most people is 206. True False - Answer>>true The sternum is part of the - Answer>>axial skeleton. At what age are nearly all bones completely ossified? - Answer>>25 years The parietal bones meet each other along the sagittal suture. True False - Answer>>True Which of the following is not found associated with spongy bone? - Answer>>Osteons Which three bones fuse to form the hip bone? - Answer>>the ilium, the ischium, and the pubis. Men and women begin to lose bone at the same rate by about age 70. True False - Answer>>True All of the following are functions of bones except:
Abduction and adduction Rotation Flexion and extension All of the above - Answer>>All of the above The joint between adjacent vertebral bodies is a - Answer>>symphysis that is amphiarthrotic. A saddle joint forms between bones whose articulating surfaces have both convex and concave regions. True False - Answer>>True Fluid-filled sacs containing synovial fluid are called - Answer>>bursae. Osteoarthritis is caused by a bacterial infection. True False - Answer>>False A gomphosis is a ______ joint. - Answer>>fibrous Fibrous joints are the first to change with age. True False - Answer>>True In which of the following is rotational movement possible? Ball-and-socket joint Condylar joint
Hinge joint Pelvic joint - Answer>>Ball-and-socket joint Endomysium separates individual muscle fibers from each other. True False - Answer>>True A sarcomere is best described as - Answer>>a unit within a muscle fiber. Binding sites on the surface of actin allow the formation of cross-bridges with molecules of - Answer>>myosin. In the initiation of muscle fiber contraction, calcium ions bind to tropomyosin, exposing active sites on actin for cross-bridge formation. True False - Answer>>False Which of the following is not a muscle of mastication? - Answer>>Zygomaticus Creatine phosphate - Answer>>upplies energy for the synthesis of ATP. The buccinator muscle is in the - Answer>>cheek. When a muscle undergoes atrophy in response to disuse all of the above. the size of actin and myosin filaments decreases.
The increase in the number of motor units activated as a result of more intense stimulation is called - Answer>>recruitment. In a recording of a muscle twitch, the delay between the time a stimulus is applied and the time the muscle responds is called the - Answer>>latent period. Arrange the following steps of muscle fiber contraction in the correct sequence.
- The muscle impulse reaches the sarcoplasmic reticulum and calcium is released.
- Thin filaments are pulled over the thick filaments.
- Calcium floods the sarcoplasm and binds to troponin molecules leaving active sites.
- The impulse arrives at the synapse and travels through the transverse tubules.
- The muscle fiber shortens and contracts.
- Myosin heads bind to exposed active sites on actin, forming cross-bridges. - Answer>>4, 1, 3, 6, 2, 5 Activities such as distance swimming and distance running are most likely to stimulate development of - Answer>>slow fatigue-resistant fibers.
