Blood's Primary Job Is

question 24

Multiple Choice

Blood's primary job is:

• A) transporting oxygen from the lungs and delivering it to tissue cells throughout the body.
• B) transporting protein from the bone marrow and delivering it to tissue cells throughout the body.
• C) transporting sugar from the pancreas and delivering it to tissue cells throughout the body.
• D) transporting oxygen from the heart and delivering it to tissue cells throughout the body.

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Definitions:

Neurotransmitter

A chemical within the vesicles of the synaptic knob that is released into the postsynaptic structures when a nerve impulse reaches the synaptic knob.

Synaptic knob

The expanded region at the end of an axon terminal, where neurotransmitters are released to communicate with other neurons or muscle cells.

Interneuron

A type of neuron that communicates only with other neurons, typically found within the central nervous system and plays a role in reflexes and neuronal circuits.

Arachnoid mater

A delicate membrane that is one of the three layers (meninges) surrounding the brain and spinal cord, providing protection.