maintaining good muscle strength and flexibility as we age becomes important to avoid
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ATI TEAS 7

TEAS version 7 quizlet science

1. Why is maintaining good muscle strength and flexibility as we age important?

Correct answer: B

Rationale: Maintaining good muscle strength and flexibility as we age is crucial to prevent falls. Strong muscles and good flexibility help improve balance and stability, reducing the risk of falls, which can lead to serious injuries, especially in older adults. Falls are a significant concern for the elderly population, and preventing them through muscle strength and flexibility can enhance overall quality of life. Headaches are not directly related to muscle strength and flexibility; they can have various causes such as stress, dehydration, or underlying health conditions. Anxiety is a mental health condition and not directly prevented by muscle strength and flexibility. Similarly, the common cold is a viral infection and is not influenced by muscle strength and flexibility.

2. Which of the following is the main organ responsible for producing antibodies?

Correct answer: C

Rationale: Antibodies are proteins produced by specialized white blood cells called B lymphocytes (B cells). These B cells mature in the bone marrow, where they undergo a process of differentiation and maturation to become plasma cells that secrete antibodies. The bone marrow is the primary site for the production of B cells and antibodies in the immune system. The thymus gland is responsible for the maturation of T lymphocytes (T cells), not antibody production. The spleen and lymph nodes play roles in filtering and trapping pathogens but are not the main organs responsible for producing antibodies.

3. Which of the following types of stem cells can differentiate into any cell type, including forming an entire organism?

Correct answer: A

Rationale: Totipotent stem cells possess the unique ability to differentiate into any cell type, including forming an entire organism. These cells have the highest potency level and can give rise to both embryonic and extraembryonic cell types, allowing them to develop into a complete organism. Multipotent stem cells (Choice B) can differentiate into a limited range of cell types within a specific tissue or organ. Pluripotent stem cells (Choice C) can differentiate into any cell type in the body except for those needed to support and develop a fetus. Hematopoietic stem cells (Choice D) are a type of multipotent stem cell that can differentiate into various blood cell types.

4. What is the difference between a sensory neuron and a motor neuron?

Correct answer: A

Rationale: Sensory neurons are responsible for carrying signals from sensory receptors towards the central nervous system (brain and spinal cord), allowing the brain to receive information about the external environment. On the other hand, motor neurons carry signals away from the central nervous system to muscles and glands, enabling the brain to control voluntary and involuntary movements. Choice B is incorrect because sensory neurons do not control muscles, and motor neurons control both voluntary and involuntary muscles. Choice C is incorrect as sensory neurons are located in the peripheral nervous system, while motor neurons are located in the central nervous system. Choice D is incorrect because sensory neurons detect various stimuli such as touch, taste, smell, and sound, while motor neurons are not involved in detecting sensory stimuli.

5. Which of the following best describes a plane that divides the body into upper and lower portions?

Correct answer: B

Rationale: The correct answer is B: Transverse. A transverse plane, also known as a horizontal plane, divides the body into upper and lower portions. This plane is perpendicular to the long axis of the body. Coronal planes divide the body into anterior and posterior portions. Oblique planes pass through the body at an angle, neither strictly horizontal nor vertical. The median plane passes longitudinally through the body, dividing it into equal left and right halves.

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