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Sharice Dominguez
Human Physiology weeks 1-7
| Question | Answer |
|---|---|
| Of the 11 major body systems, which is the least involved in maintaining homeostasis? | Reproductive |
| If the secretion of oxytocin during childbirth operated as a negative-feedback control loop, what effect would it have on uterine contractions? | Oxytocin would inhibit uterine contractions. |
| Which lipid acts as a “tissue hormone”? | Prostaglandin |
| The alpha helix is an example of which level of protein structure? | Secondary |
| Which energy-releasing or energy-transferring molecule does not contain a nucleotide? | Creatine phosphate |
| What is the most important factor in determining the physical and chemical properties of fatty acids? | Degree of saturation |
| Which level of protein structure refers to the number, kind, and sequence of amino acids? | Primary |
| The pairing of bases of a strand of DNA is obligatory. If a strand of DNA were composed of the base sequence of ATCG, what would be the obligatory sequence of its opposing base pairs? | TAG C |
| Which type of tissue has the greatest capacity to regenerate? | Epithelial |
| Areolar tissue usually contains which types of cells in the greatest number? | Fibroblasts |
| Which cells form the blood-brain barrier that protects the brain from harmful substances in the blood? | Astrocytes |
| Which type of connective tissue helps newborns maintain body temperature by producing heat? | Brown fat |
| Bones grow in diameter by the combined action of which two of the three bone cell types? | Osteoblasts and osteoclasts |
| Which structures are unique to the fetal skull and provide additional space for molding the head shape as the baby passes through the birth canal? | Fontanels |
| In terms of function, which is considered an immovable joint? | Synarthrosis |
| Which structure functions to temporarily store calcium ions? | Sarcoplasmic reticulum |
| Which joint allows for a unique movement called opposition? | Saddle |
| Attempting to pick up an object too heavy to lift would result in which type of muscle contraction? | Isometric |
| Which muscle group extends the vertebral column and also flexes the back laterally and rotates it a little? | Erector spinae |
| Which type of muscle is responsible for peristalsis? | Single-unit smooth |
| Which neuron could transmit a nerve impulse the fastest? | A large-diameter neuron with myelin |
| The fastest nerve fibers in the body can conduct an impulse that is how much faster than the slowest fibers in the body? | Almost 300 times faster |
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sharicedominguez