The forearm consists of the:
- radius and ulna
- radius and humerus
- ulna and humerus
- humerus and carpus
The pectoral girdle consists of the:
- clavicle and sternum
- sternum and scapula
- clavicle and scapula
- clavicle and coccyx
All of the following are groups of vertebrae except ________, which is a curvature.
- thoracic
- cervical
- lumbar
- pelvic
Which of these is a facial bone?
- frontal
- occipital
- lacrimal
- temporal
The Haversian canal:
- is arranged as rods or plates
- contains the bone’s blood vessels and nerve fibers
- is responsible for the lengthwise growth of long bones
- synthesizes and secretes matrix
The epiphyseal plate:
- is arranged as rods or plates
- contains the bone’s blood vessels and nerve fibers
- is responsible for the lengthwise growth of long bones
- synthesizes and secretes bone matrix
The cells responsible for bone resorption are ________.
- osteoclasts
- osteoblasts
- fibroblasts
- osteocytes
Compact bone is composed of ________.
- trabeculae
- compacted collagen
- osteons
- calcium phosphate only
Synchondroses and symphyses are:
- synovial joints
- cartilaginous joints
- fibrous joints
- condyloid joints
The movement of bone away from the midline of the body is called ________.
- circumduction
- extension
- adduction
- abduction
Which of the following is not a characteristic of the synovial fluid?
- lubrication
- shock absorption
- regulation of water balance in the joint
- protection of articular cartilage
The elbow is an example of which type of joint?
- hinge
- pivot
- saddle
- gliding
In relaxed muscle, the myosin-binding site on actin is blocked by ________.
- titin
- troponin
- myoglobin
- tropomyosin
The cell membrane of a muscle fiber is called a ________.
- myofibril
- sarcolemma
- sarcoplasm
- myofilament
The muscle relaxes if no new nerve signal arrives. However the neurotransmitter from the previous stimulation is still present in the synapse. The activity of ________ helps to remove this neurotransmitter.
- myosin
- action potential
- tropomyosin
- acetylcholinesterase
The ability of a muscle to generate tension immediately after stimulation is dependent on:
- myosin interaction with the M line
- overlap of myosin and actin
- actin attachments to the Z line
- none of the above