Homeostasis Test Review Part A True and False

Homeostasis Test Review

Part A: True and False

Contractions that increase in strength during pregnancy are an example of a negative feedback mechanism. A. True B. False

Contractions that increase in strength during pregnancy are an example of a negative feedback mechanism. A. True B. False – positive feedback

Some animals sun themselves or retreat to shade as a way of regulating their body temperature. A. True B. False

Some animals sun themselves or retreat to shade as a way of regulating their body temperature. A. True B. False

A cross section of the kidney shows an outer layer called the medulla, an inner layer called the cortex, and a hollow chamber called the renal pelvis. A. True B. False

A cross section of the kidney shows an outer layer called the medulla, an inner layer called the cortex, and a hollow chamber called the renal pelvis. A. True B. False - outer layer: cortex - inner layer: medulla

Plasma proteins, erythrocytes, and platelets are transferred to the Bowman's capsule. A. True B. False

Plasma proteins, erythrocytes, and platelets are transferred to the Bowman's capsule. A. True B. False

When a person sweats and does not drink water, the pituitary gland releases ADH. A. True B. False

When a person sweats and does not drink water, the pituitary gland releases ADH. A. True B. False

Information from your brain is moved to your leg muscles by motor neurons. A. True B. False

Information from your brain is moved to your leg muscles by motor neurons. A. True B. False

Myelin sheath is very important for the transferring of information along the medulla. A. True B. False

Myelin sheath is very important for the transferring of information along the medulla. A. True B. False - axon

Electrochemical messages are carried by the movement of ions through the nerve membrane. A. True B. False

Electrochemical messages are carried by the movement of ions through the nerve membrane. A. True B. False

When the nerve cell is excited, it becomes more permeable to potassium ions than sodium ions. A. True B. False

When the nerve cell is excited, it becomes more permeable to potassium ions than sodium ions. A. True B. False - sodium

If a foreign bacteria enters the skin, the first leukocyte it will meet will be a macrophage. A. True B. False

If a foreign bacteria enters the skin, the first leukocyte it will meet will be a macrophage. A. True B. False

An antibody that attacks the HIV virus will also attack other viruses. A. True B. False

An antibody that attacks the HIV virus will also attack other viruses. A. True B. False

Part B: Multiple Choice

The term used to describe the ability of a living organism to adjust to changing environmental conditions by regulating their internal processes is a. regulation b. homeostasis c. Inhibition d. feedback e. metabolism

The term used to describe the ability of a living organism to adjust to changing environmental conditions by regulating their internal processes is a. regulation b. homeostasis c. Inhibition d. feedback e. metabolism

Which of the following analogies would best fit the action of the kidney? a. selecting those items not useful and excreting them b. removing all the items and returning 10% of them c. removing all the items and returning none of them d. removing all the items and returning what is still useful

Which of the following analogies would best fit the action of the kidney? a. selecting those items not useful and excreting them b. removing all the items and returning 10% of them c. removing all the items and returning none of them d. removing all the items and returning what is still useful

Which one of the following is a part of the circulatory system? a. b. c. d. distal tubules collecting duct Bowman's capsule glomerulus

Which one of the following is a part of the circulatory system? a. b. c. d. distal tubules collecting duct Bowman's capsule glomerulus

Choose the item below controlled by ADH: a. the level of glucose in the blood b. the amount of water re-absorbed in the nephron c. the development of the lining of the uterus d. the release of an ovum from the ovary e. the uptake of calcium by the bones

Choose the item below controlled by ADH: a. the level of glucose in the blood b. the amount of water re-absorbed in the nephron c. the development of the lining of the uterus d. the release of an ovum from the ovary e. the uptake of calcium by the bones

Antidiuretic hormone is secreted by the a. Thyroid b. pituitary gland c. adrenal glands d. hypothalamus

Antidiuretic hormone is secreted by the a. Thyroid b. pituitary gland c. adrenal glands d. hypothalamus

The coordination of motor activities in mammals is carried out by which of the following? a. Pons b. Medulla c. Cerebellum d. Hypothalamus e. cerebrum

The coordination of motor activities in mammals is carried out by which of the following? a. Pons b. Medulla c. Cerebellum d. Hypothalamus e. cerebrum

Focusing the eye is achieved by changing the shape of the lens. This is called a. Zooming b. Habituation c. Refraction d. Accommodation e. conditioning

Focusing the eye is achieved by changing the shape of the lens. This is called a. Zooming b. Habituation c. Refraction d. Accommodation e. conditioning

The autonomic division of the nervous system a. is involved in conscious thought b. is involved in learning c. controls unconscious life-sustaining activities d. controls voluntary muscles e. all of the above

The autonomic division of the nervous system a. is involved in conscious thought b. is involved in learning c. controls unconscious life-sustaining activities d. controls voluntary muscles e. all of the above

A patient with symptoms of tremors, an irregular walk, and halting speech might have experienced trauma to which of the following? a. b. c. cerebrum pons cerebellum d. e. thalamus hypothalamus

A patient with symptoms of tremors, an irregular walk, and halting speech might have experienced trauma to which of the following? a. b. c. cerebrum d. pons e. cerebellum thalamus hypothalamus

Respiration is controlled by which of the following? a. pons, hypothalamus b. pons, medulla oblongata c. cerebrum, hypothalamus d. hypothalamus, pituitary gland

Respiration is controlled by which of the following? a. pons, hypothalamus b. pons, medulla oblongata c. cerebrum, hypothalamus d. hypothalamus, pituitary gland

The act of blushing when embarrassed is controlled by which of the following? a. the autonomic nervous system b. pores in the skin c. the cerebrum d. the cerebellum e. the peripheral nervous system

The act of blushing when embarrassed is controlled by which of the following? a. the autonomic nervous system b. pores in the skin c. the cerebrum d. the cerebellum e. the peripheral nervous system

Parasympathetic stimulation would result in which of the following? a. decreased blood flow in skin b. increased heart rate c. pupil dilation d. increased activity of digestive tract

Parasympathetic stimulation would result in which of the following? a. decreased blood flow in skin b. increased heart rate c. pupil dilation d. increased activity of digestive tract

Vision difficulties are associated with which lobe of the brain? a. Frontal b. Parietal c. Temporal d. occipital

Vision difficulties are associated with which lobe of the brain? a. Frontal b. Parietal c. Temporal d. occipital

Which part of the neuron receives sensory information? a. Dendrite b. Axon c. Sheath d. node of Ranvier

Which part of the neuron receives sensory information? a. Dendrite b. Axon c. Sheath d. node of Ranvier

Which of the following is not an effector? a. Muscles b. glands c. Organs d. brain

Which of the following is not an effector? a. Muscles b. glands c. Organs d. brain

There is no vaccine available to prevent the common cold because a. common cold viruses do not stimulate production of antibodies b. there are too many types of common cold viruses c. common cold viruses grow best at 33°C instead of 37°C d. the common cold seldom causes absence from work and school

There is no vaccine available to prevent the common cold because a. common cold viruses do not stimulate production of antibodies b. there are too many types of common cold viruses c. common cold viruses grow best at 33°C instead of 37°C d. the common cold seldom causes absence from work and school

T cells become mature in which of the following? a. bone marrow b. spleen c. thyroid gland d. lymph node e. thymus gland

T cells become mature in which of the following? a. bone marrow b. spleen c. thyroid gland d. lymph node e. thymus gland

Part C: Short Answer

1. Describe how negative feedback is preferable to positive feedback in most situations.

- positive feedback will increase the response - disadvantage if stimulus is harmful - negative feedback reduces the response when balance is achieved

What conditions or substances must remain constant in the body?

1. Body temperature 2. p. H 3. Water levels 4. Oxygen/carbon dioxide levels 5. Nutrient levels 6. Electrolytes (dissolved ions) 7. Wastes, toxins

List the three stages of urine formation.

1. Glomerular filtration 2. Active recovery/reabsorption 3. Water recovery/secretion of wastes

Describe the role of insulin and glucagon in regulating blood sugar.

Insulin – lowers blood sugar Glucagon – raises blood sugar

List three non-specific defences of the body.

1. Skin 2. Body secretions 3. Normal bacteria 4. White blood cells