The Various Systems and Organs Develop at Different Stages

question 17

Multiple Choice

The various systems and organs develop at different stages.Which statement is accurate?

• A)The cardiovascular system is the first organ system to function in the developing human.
• B)Hematopoiesis originating in the yolk sac begins in the liver at 10 weeks.
• C)The body changes from straight to C-shaped at 8 weeks.
• D)The gastrointestinal system is mature at 32 weeks.

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Definitions:

Axon Terminal

The endpoint of an axon or nerve fiber, where it makes synaptic connections with another nerve cell or muscle cell.

Selective Permeability

A property of cellular membranes that allows certain substances to pass through while keeping others out.

Neural Membrane

The lipid bilayer that encloses a neuron, playing a crucial role in the conduction of electrical impulses.

Resting Potential

The electrical potential of a neuron when it is not actively sending a signal, representing a state of readiness.