Choose the Most Correct Statement Concerning Capillaries

question 21

Multiple Choice

Choose the most correct statement concerning capillaries.

• A)Networks of capillaries are called capillary nets.
• B)Almost all capillaries are open at the same time.
• C)The only site of nutrient,gas exchange,and waste exchange is the capillaries.
• D)Pre-capillary sphincters contract to increase capillary flow.
• E)The walls of capillaries contain smooth musclE.

Identify the geographical spread and temporal range of Neandertals and their anatomical differences from modern humans.

Grasp the incremental nature of human evolution, particularly in brain size and dietary practices.

Understand the classification and significance of Homo habilis and Australopithecines in human evolution.

Recognize the impact of continental drift and climate change on evolution.

---

Definitions:

Axial Skeleton

Consists of the bones along the body's long axis, including the skull, vertebral column, and rib cage, supporting the central part of the body.

Spinal Column

The structure consisting of vertebrae protecting the spinal cord and supporting the body; also known as the vertebral column.

Skull

The bony structure that forms the head in vertebrates, housing and protecting the brain.

Rib Cage

The structure of ribs encasing the chest, protecting vital organs like the heart and lungs, and aiding in respiration.