Lymphatic Capillaries

question 58

Multiple Choice

Lymphatic capillaries

• A)cannot be discerned structurally from cardiovascular system capillaries.
• B)originate as closed-ended tubes associated with blood capillary networks.
• C)filter lymph.
• D)concentrate lymph prior to passing it to larger lymphatic vessels.
• E)include layers of smooth muscle for peristalsis.

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Definitions:

Hypnogogic Images

Visual or auditory experiences that occur in the transitional state from wakefulness to sleep.

Sleep Spindles

Sleep spindles are sudden bursts of oscillatory brain activity visible on an EEG during Stage 2 sleep, associated with memory consolidation and synaptic plasticity.

Delta Waves

Slow, high amplitude brainwaves of less than 4 Hz that are typically associated with the deepest stages of sleep and unconsciousness.

Sleep Deprivation

Any significant loss of sleep, resulting in problems in concentration and irritability.