Sections 1.4 d and e, and 1.5

A patient previously had abdominal surgery and has a scar from a transverse (cross) section. Now, he'll have another surgery that requires a parasagittal section, which will intersect the transverse section. What will his scars look like when his surgical incision heals? Assume this patient is in anatomical position. Y X + T Two parallel lines

+

The epigastric region is ________ to the right hypochondriac region of the abdominopelvic cavity.

medial

The central region of the thoracic cavity containing the heart is called the ________.

mediastinum

Which of these internal body cavities is the most inferior?

pelvic cavity

Milk production increases during breastfeeding when a newborn suckles from his mother's nipple. This type of feedback mechanism in which the stimulus pushes milk production farther from its original value best describes ________.

positive feedback

Select all of the regions of the abdominopelvic cavity that are medial. 1) right iliac (inguinal) region 2) epigastric region 3) hypogastric region 4) left lumbar region 5) left hypochondriac region

2 and 3

Place these components of a homeostatic control system in the proper order. 1) effector 2) efferent pathway 3) receptor 4) control center 5) afferent pathway

3, 5, 4, 2, and 1

Physical trauma to a body organ is known as blunt trauma. Organs in which body cavity account for most blunt trauma injuries?

abdominal cavity

Which of the following cavities is NOT associated with the urinary bladder? pelvic cavity abdominal cavity ventral body cavity abdominopelvic cavity

abdominal cavity

Which body cavity can be further subdivided into quadrants and regions?

abdominopelvic

When our body temperature rises above 37°C or 98°F, a negative feedback mechanism will be triggered to lower the body temperature. As a result, our sweat glands release sweat to cool the body temperature. What part of the negative feedback mechanism is the sweat gland?

effector

The orbital cavities house the ________.

eyes

Which of these planes would show the heart, lungs, and liver in the same section? horizontal plane frontal (coronal) plane

frontal (coronal) plane

The body's ability to maintain stable internal conditions is referred to as ________.

homeostasis

The surgeon created an opening in the chest during surgery. The incision was made along a plane that equally separated the right and left halves of the thoracic cavity. This section is known as a(n) ________.

median (midsagittal) section

Which body cavity subdivision is part of the dorsal cavity?

spinal cavity

The dorsal body cavity houses the ________.

spinal cord and brain

Which of these carries out the commands of a homeostatic control center?

effector

Which of the following is an example of a homeostatic imbalance? perspiration being sick with the flu blood clotting wearing wool socks on a cold day

being sick with the flu

What cavity is superior to the diaphragm?

thoracic cavity

The two major internal body cavities are the ________ cavity and the ________ cavity.

ventral and dorsal

Blood calcium levels are maintained by a negative feedback homeostatic mechanism. When blood calcium levels rise beyond their set point, a hormone called calcitonin is released by the thyroid gland to lower blood calcium levels back to their set point. What role does the thyroid gland play in this mechanism?

Effector

The hypogastric (pubic) region is directly superior to the umbilical region. True False

False

The spinal cavity is part of the ventral body cavity. True False

False

Transverse or cross sections divide the body into anterior and posterior parts. True False

False

Considering the homeostatic control of body temperature when we become too hot, predict what would happen to body temperature if the effector was unable to perform its job.

The body would not be able to reduce the effect of the stimulus

Which type of plane separates the thoracic cavity from the abdominopelvic cavity?

Transverse (cross)

Most homeostatic control mechanisms are negative feedback mechanisms. True False

True

The thoracic cavity is separated from the abdominopelvic cavity by the diaphragm. True False

True

There is no physical structure that separates the abdominal cavity from the pelvic cavity. True False

True

A patient in the emergency department complains of pain in her right upper quadrant (RUQ). What organ is least likely to be the cause for her pain?

Urinary bladder

Which body cavity includes all others?

Ventral cavity

What type of sensor monitors and responds to changes in the environment in a negative feedback loop?

receptor

What is the overall effect of a negative feedback mechanism?

reduces or stops the initial stimulus

Which of these describes the effect of a negative feedback mechanism? reduces the intensity of the initial stimulus prevents the stimulus from occurring pushes the variable farther away from the set point extends the duration of the initial stimulus

reduces the intensity of the initial stimulus

Which term best characterizes the concept of homeostasis? unchanging internal environment relatively stable internal environment positive feedback continuously changing internal environment

relatively stable internal environment

In what quadrant is the gallbladder located?

right upper quadrant

A young child sustained a baseball hit to his cranial cavity. Which bones were fractured?

skull

The lungs and heart are situated in the ________ body cavity.

thoracic

To perform heart surgery, an incision is made into the ____ cavity.

thoracic

The diaphragm creates a ________ section by dividing the ventral body cavity into superior and inferior subdivisions.

transverse (cross)

An outpatient is having a scan performed to check for lung cancer. The lung should be scanned showing the lungs image in a left to right view. What type of plane do you recommend?

transverse (cross) plane

The navel is located in the ________ region of the abdominopelvic cavity.

umbilical