31 Questions
What is the main function of the nervous system?
Controlling body movements
Which part of the nervous system contains the brain and spinal cord?
Central nervous system
What are the specialized cells that transmit messages in the nervous system?
Neurons
Which part of a neuron receives information from other neurons?
Dendrites
What is the main function of dendrites in a neuron?
Receiving information from other neurons
Which part of the neuron contains the central nucleus and organelles like ribosomes and endoplasmic reticulum?
Soma (cell body)
What is the main function of the axon?
Releasing neurotransmitters
Which cell is responsible for supporting neurons in the PNS and producing the myelin sheath?
Schwann cell
What is the gap between two myelin sheaths called?
Node of Ranvier
Where is the myelin sheath located?
Around most of the long axon
Which part of the neuron transmits action potential towards the CNS?
Sensory neuron
What is the function of synapses?
Acting as a transmission point for electrical impulses
Which part of the synapse contains neurotransmitters?
Synaptic vesicles
What does the cerebellum consist of, similar to the cerebrum?
Outer cortex (Grey matter)
What makes up the H-shaped central core of the grey matter in the spinal cord?
Nerve cell bodies and synapses
What does the spinal cord's white matter mainly consist of?
Axon terminal and Schwann cells
Which type of cartilage is found in the pinna of the ear?
Elastic cartilage
What is the main component of the cartilage's extracellular matrix?
Aggregated glycosaminoglycan (GAG)
Where are chondrogenic cells located in the cartilage?
In the cellular layer of perichondrium
What does the inner cellular layer of the perichondrium primarily consist of?
Chondrogenic cells
Which type of collagen is present in fibrocartilage?
Type I collagen
What provides the cartilage with nutrient substances?
Fibrous layer of perichondrium
Where are chondrocytes located in the cartilage?
In the center of the cartilage
What is the main function of chondrocytes in cartilage?
Secreting matrix for appositional growth of cartilage
What distinguishes chondrocytes from chondroblasts?
Are surrounded by matrix
Which component is a specialized form of connective tissue and the main element of skeletal tissues?
Bone
What are the main components of bone tissue?
Periosteum and endosteum
Where are osteoprogenitor cells located?
In the outer fibrous layer of periosteum
What is the function of osteoblasts in bone tissue?
Secreting matrix for appositional growth of bone
What distinguishes osteocytes from osteoblasts?
Are completely surrounded by bone matrix
What are the characteristics of chondrocytes under electron microscope?
Contain abundance of ribosomes, RER, well developed Golgi complex and also contains fat droplets and glycogen granules.
Test your knowledge of the nervous system and its role in responding to external and internal stimuli, regulating body temperature, managing emotions, and storing memories. Explore the components of the peripheral and central nervous systems, including neurons and neuroglia.
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