WorksheetsBIOL1307 Chapter 38 Review Quiros
Total questions: 25
Worksheet time: 13mins
What type of skeletal system is found in sea anemones and earthworms?
Endoskeleton
Exoskeleton
Hydrostatic skeleton
No skeleton
Which bone shape is described as thin, broad, and providing extensive protection?
Long
Irregular
Flat
Short
The femur is classified as a:
Short bone
Long bone
Irregular bone
Sesamoid bone
Which joint type allows for the greatest range of motion?
Hinge
Planar
Ball-and-socket
Pivot
What muscle type is under conscious control?
Cardiac
Smooth
Skeletal
All of the above
What structure is responsible for bone formation?
Osteoclasts
Osteocytes
Osteoblasts
Periosteum
Which bone articulates with the humerus at the elbow?
Femur
Ulna
Tibia
Patella
The pelvic girdle is important for:
Protection of the skull
Locomotion and weight bearing
Arm movement
Providing nutrients to bone cells
The sarcolemma is:
The structure that stores calcium
The plasma membrane of a muscle fiber
A type of bone cell
A type of joint
The primary function of osteoclasts is:
Bone formation
Bone resorption
Calcium storage
Joint stabilization
What joint type allows for gliding movements?
Condyloid
Planar
Saddle
Ball-and-socket
Myofibrils are:
Small bones in the wrist
Long, cylindrical structures in muscle cells
Proteins that store ATP
Cells responsible for producing bone matrix
The function of the patella is to:
Bear body weight
Act as a muscle attachment site
Reduce friction and improve knee extension
Stabilize the hip joint
What process begins six weeks after embryo fertilization?
Endochondral ossification
Sarcomere formation
Cross-bridge cycling
Bone remodeling
The substance that lubricates synovial joints is:
Articular cartilage
Synovial fluid
Periosteum
Collagen
ATP binding to myosin during muscle contraction causes:
Muscle relaxation
Myosin to detach from actin
Calcium release
The power stroke
Which type of joint allows rotational movement?
Saddle
Hinge
Pivot
Ball-and-socket
The Z-disc in a sarcomere marks:
The center of the sarcomere
The end boundary of a sarcomere
The location where ATP binds
The fibula:
Bears body weight
Is part of the knee joint
Acts as a site for muscle attachment
Forms part of the hip joint
What is the main function of synovial joints?
Support only
Movement and stability
Only protection of organs
Only body weight support
Which type of muscle tissue has striations and is under voluntary control?
Smooth muscle
Skeletal muscle
Cardiac muscle
None of the above
The functional unit of a skeletal muscle fiber, marked by Z-discs, is called a:
Myofibril
Sarcolemma
Sarcomere
Myofilament
The main protein that forms thick filaments in muscle fibers is:
Actin
Myosin
Tropomyosin
Troponin
During muscle contraction, what happens during the power stroke?
Myosin detaches from actin
Myosin head pivots, pulling actin toward the M-line
ATP binds to myosin
Calcium is released from the sarcoplasmic reticulum
What initiates the muscle contraction cycle by binding to the actin active site?
ATP
Calcium ions (Ca2+)
Troponin
Acetylcholine (ACh)
