one muscle in the shoulder is the

HESI A2

Vocabulary HESI A2

1. Which muscle in the shoulder is the deltoid?

A. dendrite
B. delphic
C. deltoid
D. dentate

Correct answer: C

Rationale: The deltoid muscle is located in the shoulder area. It is a rounded, triangular muscle that covers the shoulder joint and is responsible for lifting the arm and providing shoulder stability. The other options provided, dendrite, delphic, and dentate, are not muscles in the shoulder region.

2. Through which organ do muscles push food into the stomach via peristalsis?

A. Mouth
B. Small intestine
C. Epiglottis
D. Esophagus

Correct answer: D

Rationale: The correct answer is D, Esophagus. Muscles push food into the stomach via peristalsis in the esophagus. Peristalsis is a coordinated muscular contraction that helps move food from the mouth to the stomach through the esophagus. The rhythmic contractions of the esophageal muscles create a wave-like motion that propels food downward toward the stomach for digestion. Choices A, B, and C are incorrect because the mouth is where digestion begins but does not push food into the stomach, the small intestine is mainly responsible for absorbing nutrients, and the epiglottis is a flap that prevents food from entering the trachea during swallowing, not involved in pushing food into the stomach.

3. What is the primary function of the kidneys in the urinary system?

A. To filter waste from the blood
B. To produce urine
C. To regulate blood pressure
D. To absorb nutrients

Correct answer: A

Rationale: The correct answer is A: 'To filter waste from the blood.' The primary function of the kidneys in the urinary system is to filter waste products and excess substances from the blood, forming urine, which is then excreted from the body. Kidneys play a crucial role in maintaining the body's overall balance by filtering out waste, regulating fluid levels, and helping in the elimination of toxins. Choices B, C, and D are incorrect because while the kidneys do produce urine, regulate blood pressure, and help in nutrient absorption indirectly, their primary function is the filtration of waste from the blood.

4. What is the best description for an assembled product in the following sentence? The provisions apply to any “electronic product,” which is defined as any manufactured or assembled product (or component, part, or accessory of such product) that, when in operation, (i) contains or acts as part of an electronic circuit and (ii) emits electronic product radiation.

A. A product that is collected
B. A product that is legislated
C. A product that is put together
D. A product that is agreed upon

Correct answer: C

Rationale: The best description for an assembled product in the given sentence is "a product that is put together," as assembling refers to the action of putting together various parts or components to create a finished product. The sentence mentions that the provisions apply to any "assembled product" along with components, parts, or accessories of the product. Choice A, 'A product that is collected,' is incorrect as collecting does not imply assembling. Choice B, 'A product that is legislated,' is incorrect as legislation is related to laws and regulations, not the physical process of assembling. Choice D, 'A product that is agreed upon,' is incorrect as agreeing upon a product is unrelated to the physical act of assembling it.

5. A kite has a top base of 20cm, a bottom base of 30cm, and two equal side lengths of 15cm. What is its perimeter?

A. 55cm
B. 65cm
C. 70cm
D. 80cm

Correct answer: C

Rationale: To find the perimeter of a kite, you need to add the lengths of all its sides. In this case, the perimeter is calculated as the sum of the top base, bottom base, and twice the side length. Therefore, perimeter = top base + bottom base + 2 * side length = 20cm + 30cm + 2 * 15cm = 70cm. Choice A, B, and D are incorrect as they do not consider all sides of the kite in the calculation.