A&P ch1.5

Which of the following is the best explanation for why cells are considered the smallest units of living things.

Cells are the simplest structures to fit all of the characteristics necessary to be considered alive.

What is the function of serous fluid?

It enables organs, such as the heart and the stomach, to slide across cavity walls and each other without friction.

Which of the following statements is the most correct regarding homeostatic imbalance?

It is considered the cause of most diseases.

Which of the following best defines anatomy?

It is the study of the structure of body parts and their relationships with one another.

Which of the following imaging devices would best localize a tumor in a person's brain?

MRI

What is the mediastinum?

Space between the lungs, containing the heart, great vessels, and esophagus

Choose the following statement that is not completely correct regarding serous membranes.

Visceral pericardium covers the outer surface of the heart, and parietal pericardium lines the internal walls of the heart.

Homeostasis is the condition in which the body maintains ________.

a relatively stable internal environment, within limits

Which of the following describes a parasagittal plane?

any sagittal plane except in the midline

Which of the following is the regional term that includes the head?

axiel

The dorsal body cavity is the site of which of the following?

brain

Which of the following describes the operation of the heart and blood vessels?

cardiovascular physiology

All living organisms maintain an external boundary. Which of the following systems functions only within the body?

circulatory system

Expiration (breathing out) is how the body removes excessive carbon dioxide from the blood. This is an example of ________.

excretion of metabolic waste

The elbow is proximal to the shoulder.

false

A coronal section creates a superior and an inferior section.

false, it would be a transverse

Digestion includes breaking substances into their simpler building blocks, synthesizing more complex cellular structures from simpler substances, and using nutrients and oxygen to produce ATP.

false: that is the def of motabolism

The thoracic cavity contains the ________. It is found ________ to the vertebral cavity.

heart and lungs: anterior

The coxal joint is most likely found in ________ region of the body.

hip

Which of the following organs or structures would be found in the left iliac region?

liver

Prevention of water loss is a necessary function for life that would best fit in the category of ________.

maintaining boundaries

Which life process, which relies heavily on nutrient inputs from the respiratory and digestive systems, sustains all other life processes?

metabolism

Which of the following are survival needs of the body?

nutrients, water, atmospheric pressure, and oxygen

It is wise to study anatomy alongside with physiology because ________.

physiology is only explainable in terms of the underlying anatomy

In which body cavities are the lungs located?

pleural, ventral, and thoracic

When a baby suckles at its mother's breast the stimulus at the breast is sent to the mother's brain (a region called the hypothalamus). The brain responds by releasing hormones to stimulate the production and the ejection of milk from the breast. This helps the newborn to receive nourishment and encourages more suckling. This example is best described as a ________.

positive feedback

Positive feedback differs from negative feedback because ________.

positive feedback tends to enhance the triggering stimulus while negative feedback tends to return the body to a homeostatic balance or "ideal" level

Some of the nerve endings in the skin are sensitive to changes in temperature. They are part of a negative feedback mechanism regulating body temperature. These nerve endings represent a(n) ________ in the negative feedback mechanism.

receptor

With regards to a variation of a physiological value from its set point or normal limit, negative feedback always __________ the value back to the set point or normal limit.

returns

Which of the following cuts could cross the umbilical, pelvic, and nasal regions?

saggittal

One of the functional characteristics of life is excitability or responsiveness. This refers to ________.

sensing changes in the environment and then reacting or responding to them

Which of the following represents the correct order in which the components interact in a homeostatic control system?

the receptor, the control center, and the effector

The dorsal body cavity is divided into which of the following subdivisions?

the vertebral/spinal and cranial cavities

Histology would be best defined as a study of ________.

tissues

Generally what is the result of the negative feedback process?

to maintain homeostasis

A major function of serous membranes is to decrease friction.

true

Digital Subtraction Angiography (DSA) imaging is most useful in discovering obstructed blood supplies in organs and tissues.

true

It is important for any organism to maintain its boundaries, so that its internal environment remains distinct from the external environment surrounding it.

true

The serous membrane is a double-layered membrane created by two separate membranes.

true