Which of the Following Is Characteristic of the Circulatory System

question 52

Multiple Choice

Which of the following is characteristic of the circulatory system of arthropods?

• A) lack of a heart
• B) lack of blood
• C) lack of blood vessels
• D) lack of distinction between blood and interstitial fluid

Understand the concept of circadian rhythm shifts in adolescence and its effects on sleep patterns.

Identify the role of specific proteins and hormones in the initiation of puberty.

Distinguish between primary and secondary sex characteristics.

Describe the changes in sleep patterns during adolescence.

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Definitions:

Synaptic Knobs

Enlarged areas at the ends of axons that release neurotransmitters to transmit signals to other neurons, muscle cells, or glands.

Neurotransmitters

Substances that conduct messages across synapses from one nerve cell to another within the nervous system.

Motor Neurons

Specialized nerve cells responsible for transmitting impulses to muscles and glands.

Arachnoid Mater

One of the three layers (meninges) that surround and protect the brain and spinal cord, lying between the dura mater and the pia mater.