ATI TEAS 7
ATI TEAS Practice Science Test
1. Which part of the hair is not attached to the follicle?
- A. Bulb
- B. Root
- C. Shaft
- D. Strand
Correct answer: C
Rationale: The correct answer is C, 'Shaft.' The hair shaft is the part of the hair that extends above the skin surface and is not attached to the follicle. The bulb and root are parts that are connected to the follicle as they are located below the skin surface and play a role in hair growth. The strand, on the other hand, refers to a single hair fiber and is not a distinct part of the hair anatomy.
2. Dense irregular connective tissue, found in tendons and ligaments, provides:
- A. Flexibility
- B. Lubrication
- C. Insulation
- D. Tensile strength
Correct answer: D
Rationale: Dense irregular connective tissue, found in tendons and ligaments, provides tensile strength. Tendons and ligaments need to withstand tension and forces acting upon them, and the dense irregular connective tissue helps provide this strength and support. Choice A, flexibility, is incorrect because tendons and ligaments primarily provide support and stability rather than flexibility. Choice B, lubrication, is not the main function of dense irregular connective tissue in tendons and ligaments. Choice C, insulation, is also incorrect as this tissue type is not primarily involved in providing insulation.
3. What is the primary function of Bartholin's glands?
- A. Secretes hormones that help the body respond to stress
- B. Provide lubrication for the vagina
- C. Helps control growth and development of the body
- D. Stimulate the development of T cells
Correct answer: B
Rationale: Bartholin's glands are two small glands located on each side of the vaginal opening. Their primary function is to secrete fluids that help lubricate the vagina during sexual arousal. This lubrication helps to reduce friction and discomfort during sexual activity, making intercourse more comfortable and pleasurable. Choices A, C, and D are incorrect because Bartholin's glands do not secrete hormones to respond to stress, control growth and development, or stimulate the development of T cells. Their main role is specifically related to vaginal lubrication.
4. Why is an extensive network of blood vessels necessary to supply the endocrine glands?
- A. To filter waste from the blood
- B. Because the glands empty directly into the blood
- C. To allow blood to empty into the endocrine system
- D. To filter waste from the endocrine glands
Correct answer: B
Rationale: The correct answer is B. Endocrine glands release hormones directly into the blood, which is why they require a rich blood supply to ensure effective hormone distribution throughout the body. The extensive network of blood vessels allows hormones to be quickly transported to target tissues and organs, regulating various physiological functions. Choices A, C, and D are incorrect because endocrine glands do not filter waste from the blood or the glands themselves. They release hormones into the bloodstream to regulate bodily functions, making a direct connection to the blood supply crucial for their function.
5. What is the primary function of nervous tissue?
- A. Movement
- B. Protection
- C. Communication and coordination
- D. Nutrient transport
Correct answer: C
Rationale: The primary function of nervous tissue is communication and coordination within the body. Nervous tissue is composed of neurons that transmit electrical signals and supporting cells known as neuroglia. Movement is primarily controlled by the muscular system, protection is mainly provided by the skeletal system and immune system, and nutrient transport is carried out by the circulatory system. Therefore, choices A, B, and D are incorrect as they do not align with the primary function of nervous tissue.
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