WorksheetsLet’s Quiz
Total questions: 40
Worksheet time: 13mins
The correct sequence of structures in a reflex arc is _______________.
Effector → Motor neuron → Interneuron → Sensory neuron → Receptor
Receptor → Motor neuron → Interneuron → Sensory neuron → Effector
Receptor → Sensory neuron → Interneuron → Motor neuron → Effector
Sensory neuron → Receptor → Interneuron → Effector → Motor neuron
Receptor → Interneuron → Sensory neuron → Motor neuron → Effector
Flat bones of the skull are formed through the process of ____________________ ossification.
Endochondral
Appositional
Epiphyseal
Intramembranous
Fibrocartilaginous
The component of a reflex arc that detects the stimulus is known as the ____________________.
Effector
Motor neuron
Interneuron
Sensory receptor
Synapse
According to Wolff’s law, bone structure adapts in response to ____________________.
Hormonal imbalance
Nutritional intake
Ageing
Genetic mutation
Mechanical stress
In a simple reflex arc, the neuron that connects the sensory neuron to the motor neuron is the ____________________.
Sensory neuron
Motor neuron
Afferent neuron
Efferent neuron
Interneuron
In the stretch reflex, muscle length changes are detected by the ____________________.
Muscle spindle
Golgi tendon organ
Pain receptor
Joint receptor
Pacinian corpuscle
Long bones primarily develop through ____________________ ossification.
Intramembranous
Subperiosteal
Endochondral
Appositional
Lamellar
The correct sequence of bone remodelling events is activation, resorption, ____________________, and mineralisation.
Differentiation
Growth
Repair
Formation
Elongation
Extrafusal muscle fibers are innervated by ____________________ motor neurons.
Alpha
Gamma
Sensory type Ia
Sensory type Ib
Sensory type II
Osteocytes are mature bone cells that function primarily to ____________________ bone tissue.
Resorb
Maintain
Form
Replace
Destroy
The structure that carries impulses away from the central nervous system to produce a response in a reflex arc is the ____________________.
Sensory neuron
Interneuron
Receptor
Central synapse
Motor neuron
One of the primary functions of bone is to support soft tissues and provide attachment for ____________________.
Blood vessels
Peripheral nerves
Skeletal muscles
Parathyroid glands
Small intestines
In an ipsilateral reflex, the sensory input and motor output occur on the ____________________ side of the body.
Opposite
Contralateral
Bilateral
Alternating
Same
Increased mechanical loading on bone stimulates bone formation through the process of ____________________.
Cartilage replacement
Bone ageing
Endochondral growth
Bone resorption
Bone remodelling
Calcitonin reduces bone resorption by inhibiting the activity of ____________________.
Osteoblasts
Osteocytes
Osteoclasts
Chondrocytes
Fibroblasts
With increasing age, bone mass tends to decrease due to an imbalance favouring ____________________ over bone formation.
Mineral deposition
Longitudinal growth
Appositional growth
Bone resorption
Ossification
Unlike the stretch reflex, the crossed extensor reflex involves muscle activity on the ____________________ side of the body.
Ipsilateral
Adjacent
Same
Local
Contralateral
The role of bone in mineral homeostasis mainly involves the storage and release of ____________________.
Sodium and potassium
Calcium and phosphorus
Iron and copper
Magnesium and chloride
Zinc and iodine
Bones assist in body movement by acting as ____________________ for muscle contraction.
Joints
Anchors
Levers
Shock absorbers
neurotransmitters
Intrafusal muscle fibers play an important role in REGULATING muscle ____________________.
Force generation
Power output
Length shortening
Rapid contraction
Tone and sensitivity
Bone remodelling is a continuous process involving bone resorption followed by bone ____________________.
Calcification
Growth
Repair
Formation
Differentiation
The withdrawal reflex is initiated by a painful stimulus and is mediated through a ____________________ reflex arc.
Monosynaptic
Ipsilateral only
Stretch-based
Cortical
Polysynaptic
The cell responsible for bone resorption during bone remodelling is the ____________________.
Osteoblast
Osteocyte
Osteoclast
Chondrocyte
Fibroblast
The crossed extensor reflex is activated primarily to ____________________ during a withdrawal response.
Maintain balance by extending the opposite limb
Suppress spinal reflexes
Enhance pain perception
Relax the contralateral limb
Inhibit postural muscles
Osteoblasts are derived from ____________________ stem cells.
Hematopoietic
Mesenchymal
Endothelial
Osteoclast precursor
Chondrogenic
The Golgi tendon reflex functions mainly to ____________________ when muscle tension becomes excessive.
Increase muscle contraction
Enhance muscle stretch
Activate extensors
Maintain posture
Cause muscle relaxation to prevent injury
The stretch reflex is classified as a ____________________ reflex because the sensory neuron synapses directly with the motor neuron.
Polysynaptic
Contralateral
Protective
Inhibitory
Monosynaptic
In a reflex arc, extrafusal muscle fibers function mainly as the ____________________.
Afferent pathway
Effector
Integrating centre
Sensory receptor
Efferent pathway
Aging is associated with a progressive decrease in bone mass due to reduced bone ____________________.
Growth
Loss
Resorption
Formation
Osteoporosis
Extrafusal muscle fibers are primarily responsible for ____________________.
Detecting muscle stretch
Regulating muscle sensitivity
Providing proprioceptive input
Maintaining muscle spindle tension
Producing force and movement
Longitudinal growth of long bones occurs at the ____________________.
Periosteum
Diaphysis
Articular cartilage
Medullary cavity
Epiphyseal plate
Increase in bone diameter during growth occurs mainly through ____________________ growth.
Endochondral
Appositional
Longitudinal
Interstitial
Intracellular
Intrafusal muscle fibers are located ____________________.
In the tendon near the muscle insertion
Within the muscle spindle
Outside the muscle spindle
Between muscle fascicles
Along the sarcolemma of extrafusal fibers
With advancing age, the activity of ____________________ decreases, contributing to reduced bone formation.
Osteoblasts
Osteoclasts
Chondrocytes
Fibroblasts
Osteoprogenitor cells
During a withdrawal reflex, the primary muscular response is ____________________.
Activation of extensors
Relaxation of flexors
Co-contraction of agonist and antagonist
Contraction of flexor muscles
Inhibition of all skeletal muscles
One structural change observed in aging bone is ____________________ of cortical bone.
Thickening
Mineralisation
Expansion
Thinning
Elongation
In postmenopausal women, reduced ____________________ levels accelerate bone loss.
Lactin
Oestrogen
Growth hormone
Parathyroid hormone
Aldosterone
Age-related changes in bone tissue increase the risk of ____________________.
Muscle hypertrophy
Joint dislocation
Bone infection
Fractures
Cartilage degeneration
In physiology, bone growth never stops, but bone remodelling stops!
Yes
No
Increased load leads to increased bone density.
Yes
No
