Astronomy Ranking Task: Gravity Exercise #6 Description: The table below shows the masses and distances (expressed in arbitrary units) between four different pairs of stars (Cases A – D). Case Distance between Mass of star star #1 and star #2 #1 Mass of star #2 A 4 2 2 B 2 2 8 C 8 4 4 D 1 3 5 Ranking Instructions: Rank (from greatest to least) the strength of the gravitational force exerted between the pairs of stars in cases A – D. Ranking Order: Greatest 1 2 3 4 Least Or, the strength of the gravitational force exerted between each pair of stars is the same. (indicate with a check mark) Carefully explain your reasoning for ranking this way:
The Correct Answer and Explanation is:
Correct Answers:
- Hypogastric abdominopelvic region contains the urinary bladder.
- The gall bladder is located in the right upper abdominopelvic region.
- The dorsal cavity encloses the brain (in the cranial cavity) and the spinal cord (in the vertebral cavity).
- The three sections to the thoracic cavity are the right pleural cavity, the left pleural cavity, and the mediastinum.
- The cecum is found in the right iliac (inguinal) abdominopelvic region.
- The ventral body cavity contains the thoracic and the abdominopelvic cavities.
- The stomach is found primarily in the epigastric abdominopelvic region.
- The digestive organs are found in the abdominal cavity, but the urinary bladder, reproductive organs, and rectum are found in the pelvic cavity. Collectively these two sections are called the abdominopelvic cavity.
Explanation
The human body is organized into several cavities that house various organs. One key body division is the abdominopelvic region, which is subdivided into nine regions for more precise anatomical description. The hypogastric region is located below the umbilical region and includes the urinary bladder. The gall bladder lies just beneath the liver, in the right upper quadrant or right hypochondriac region.
The dorsal cavity is one of the two main body cavities and protects the central nervous system. It is divided into the cranial cavity, which contains the brain, and the vertebral cavity, which houses the spinal cord. In the front of the body, the ventral body cavity includes the thoracic cavity (containing lungs and heart) and the abdominopelvic cavity. The thoracic cavity is further divided into the left pleural cavity, right pleural cavity, and mediastinum, where the heart resides.
The cecum, the first part of the large intestine, is typically found in the right iliac region. The epigastric region, located above the stomach, mainly contains the stomach itself. Within the abdominopelvic cavity, the abdominal cavity contains most of the digestive organs, while the pelvic cavity contains the urinary bladder, reproductive organs, and rectum. Together, the abdominal and pelvic cavities form the abdominopelvic cavity, a crucial part of human internal anatomy. Understanding these divisions helps in medical diagnosis and anatomical study.
