Spiders and Certain Other Arthropods Which Lack Jaws or Mandibles

question 35

Multiple Choice

Spiders and certain other arthropods which lack jaws or mandibles are placed in a subphylum called

• A)Agnathae.
• B)Amandibulata.
• C)blood suckers.
• D)chelicerates.
• E)mandibulates.

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Definitions:

Inferior Vena Cava

A large vein that carries deoxygenated blood from the lower and middle parts of the body to the right atrium of the heart.

Ascending Lumbar Veins

Veins that ascend along the lumbar spine, draining blood from the lower body and torso back towards the heart.

Hepatic Portal System

A network of veins that carries blood from the gastrointestinal organs and spleen to the liver.

Abdominal Viscera

The internal organs within the abdominal cavity, including the stomach, liver, intestines, and others.