BIO 255 Exam 2 ISU Questions and Answers

BIO 255 Exam 2 ISU Questions and Answers which is NOT a function of bone ATP storage Bones are constantly undergoing resorption for various reasons. Which of the following cells accomplishes this process? osteoclast the humorous is a long bone a meatus is a canal-like passage a head on a bone is a rounded projection on neck the structural unit of compact bone is the osteon bones are covered by a protective tissue called periosteum. the inner (osteogenic) layer consists primarily of osteoblasts and osteoclasts ossification and growth at the epiphyses of long bones is accomplished by secondary ossification Which would be the primary reason more bone is resorbed than deposited to increase blood calcium To make spongy bone stronger, trabeculae align along lines of stress which is NOT a bone of the axial skeleton clavicle Choose the statement that is most correct about the bony orbits that house your eyes the orbits are formed of both facial and cranial bones Which bone has a pair in the cranium temporal the cervical curvature is concave posteriorly in the intervertebral disks, the _______ encloses the gelatinous _______ annulus fibrosis, nucleus pulposis the vertebral foramina of the vertebra contain the spinal cord and protects it the rhythmic movements of breathing alternately lift and depress the thorax the tibia is in contact with which tarsus talus which spinal curvatures are present at birth thoracic and sacral synarthrotic joints permit essentials no movement an immovable joint found only between skull bones is called a suture menisci refers to cartilage pads that subdivide synovial cavities turning a joint of its long axis is rotation A joint that involves a cylinder in a trough, providing extension or flexion in a single plane is a hinge joint Compared to the shoulder, displacements of the hip joints are ________. rare because of the strong ligament reinforcement which is NOT true about changes in joints occurring as we age prudent exercise causes development of joint problems Of the following muscle types, which has only one nucleus, no sarcomeres, and rare gap junctions? multiunit smooth muscle which is NOT a function of muscles (any type) blood cell production in skeletal muscles, each myofiber is surrounded by a capillary bed which of the following wraps an entire muscle epimysium which consists of only thick filaments in a sacromere zone which is an alternative name for "myofiber" muscle cell at the neuromuscular junction, which part of the muscle cell receives the acetylcholine neurotransmitter signal to stimulate the muscle fiber to contract sarcolemma Muscle cells work together in groups known as motor units. These consist for a motor neuron and the muscle fiber innervated by it the number of muscle fibers in a contracted state in an otherwise relaxed muscle is know as its muscle tone A myofiber with much myoglobin, many mitochondria, a slow contraction velocity, and high resistance to fatigue is intermediate red [oxidative] which is NOT an expected result of doing endurance exercise lower resistance to fatigue when cardiac muscle cells die the result is fibrosis which type of muscle is noted for having diffuse junctions from autonomic nervous system fibers for applying the stimulus for the muscle to contract smooth which is NOT a characteristic of cardiac muscle tissue spindle shaped cells muscle is derived from mesoderm The muscle in a group of muscles that aids the muscle producing the desired effect is known as the synergist if a lever operates at a mechanical disadvantage, it means that the load is far from the fulcrum and the effort is applied near the fulcrum Socbob broke his right ulna while playing soccer; his arm was in a cast for 6 weeks as it healed. Socbob is right-handed. When the doctor removed his cast, he noticed his right forearm was thinner than his left, th opposite of how they had compared previously. Explain the noticeable difference in the mass of Scobob's right forearm muscle atrophy occurred while the cast immobilized Scobob's arm. Muscles used less lose muscle tine because the myofibers have become smaller [and weaker]